Veronique Ziegler

Jefferson Lab

BaBarrsquos Contributions

charm

light quark

heavy quark

BaBar last day of running

2

3

Before 2003 4 cs mesons known

2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)

2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)

Potential model mass predictions were in good agreement with the measured masses

BaBar discovery of two new states in 2003Ds0

lowast(2317)+ rarr Ds+ π0

Ds1 (2460)+ rarr Ds+ π0

with masses well below those predicted by existing potential models and this led to search for alternate interpretations

BaBar discovery of the DsJlowast(2860)

DsJ(2860)+ rarr D0 K+

DsJ(2860)+ rarr D+ KS

and another structure in the 27 GeVc2

mass region

adding yet another component to the

complex DsJ spectroscopy picturehellip

PhysRevLett 90 242001 (2003)

PhysRevLett 97 222001 (2006)

_

4

BaBar as a Charm Baryon Factory

Access to rare decay modes amp

High precision studies of charm baryon properties 5

Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc

+ with PDG Lc+

mass added more precise Lc+ mass measurement affects these baryon mass measurements

PhysRevD720520062005

2

0

S

MeVc 179Q

evts 844627

KK

LL

c

2

0

S

0

MeVc 102Q

evts 20264

KK

L

c

2MeVc )(1440)(04205012286

)( 0

syststat

mKKc

S

L L

2MeVc )(1260)(18103032286

)( 00

syststat

mKKc

S

L

2MeVc 140462286)(

tmeasuremen Combined

L

cm

PDG PDG

2MeVc 6092284 2004PDG

First Observation

Using low Q-value modes

6

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

charm

light quark

heavy quark

BaBar last day of running

2

3

Before 2003 4 cs mesons known

2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)

2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)

Potential model mass predictions were in good agreement with the measured masses

BaBar discovery of two new states in 2003Ds0

lowast(2317)+ rarr Ds+ π0

Ds1 (2460)+ rarr Ds+ π0

with masses well below those predicted by existing potential models and this led to search for alternate interpretations

BaBar discovery of the DsJlowast(2860)

DsJ(2860)+ rarr D0 K+

DsJ(2860)+ rarr D+ KS

and another structure in the 27 GeVc2

mass region

adding yet another component to the

complex DsJ spectroscopy picturehellip

PhysRevLett 90 242001 (2003)

PhysRevLett 97 222001 (2006)

_

4

BaBar as a Charm Baryon Factory

Access to rare decay modes amp

High precision studies of charm baryon properties 5

Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc

+ with PDG Lc+

mass added more precise Lc+ mass measurement affects these baryon mass measurements

PhysRevD720520062005

2

0

S

MeVc 179Q

evts 844627

KK

LL

c

2

0

S

0

MeVc 102Q

evts 20264

KK

L

c

2MeVc )(1440)(04205012286

)( 0

syststat

mKKc

S

L L

2MeVc )(1260)(18103032286

)( 00

syststat

mKKc

S

L

2MeVc 140462286)(

tmeasuremen Combined

L

cm

PDG PDG

2MeVc 6092284 2004PDG

First Observation

Using low Q-value modes

6

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

3

Before 2003 4 cs mesons known

2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)

2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)

Potential model mass predictions were in good agreement with the measured masses

BaBar discovery of two new states in 2003Ds0

lowast(2317)+ rarr Ds+ π0

Ds1 (2460)+ rarr Ds+ π0

with masses well below those predicted by existing potential models and this led to search for alternate interpretations

BaBar discovery of the DsJlowast(2860)

DsJ(2860)+ rarr D0 K+

DsJ(2860)+ rarr D+ KS

and another structure in the 27 GeVc2

mass region

adding yet another component to the

complex DsJ spectroscopy picturehellip

PhysRevLett 90 242001 (2003)

PhysRevLett 97 222001 (2006)

_

4

BaBar as a Charm Baryon Factory

Access to rare decay modes amp

High precision studies of charm baryon properties 5

Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc

+ with PDG Lc+

mass added more precise Lc+ mass measurement affects these baryon mass measurements

PhysRevD720520062005

2

0

S

MeVc 179Q

evts 844627

KK

LL

c

2

0

S

0

MeVc 102Q

evts 20264

KK

L

c

2MeVc )(1440)(04205012286

)( 0

syststat

mKKc

S

L L

2MeVc )(1260)(18103032286

)( 00

syststat

mKKc

S

L

2MeVc 140462286)(

tmeasuremen Combined

L

cm

PDG PDG

2MeVc 6092284 2004PDG

First Observation

Using low Q-value modes

6

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Before 2003 4 cs mesons known

2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)

2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)

Potential model mass predictions were in good agreement with the measured masses

BaBar discovery of two new states in 2003Ds0

lowast(2317)+ rarr Ds+ π0

Ds1 (2460)+ rarr Ds+ π0

with masses well below those predicted by existing potential models and this led to search for alternate interpretations

BaBar discovery of the DsJlowast(2860)

DsJ(2860)+ rarr D0 K+

DsJ(2860)+ rarr D+ KS

and another structure in the 27 GeVc2

mass region

adding yet another component to the

complex DsJ spectroscopy picturehellip

PhysRevLett 90 242001 (2003)

PhysRevLett 97 222001 (2006)

_

4

BaBar as a Charm Baryon Factory

Access to rare decay modes amp

High precision studies of charm baryon properties 5

Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc

+ with PDG Lc+

mass added more precise Lc+ mass measurement affects these baryon mass measurements

PhysRevD720520062005

2

0

S

MeVc 179Q

evts 844627

KK

LL

c

2

0

S

0

MeVc 102Q

evts 20264

KK

L

c

2MeVc )(1440)(04205012286

)( 0

syststat

mKKc

S

L L

2MeVc )(1260)(18103032286

)( 00

syststat

mKKc

S

L

2MeVc 140462286)(

tmeasuremen Combined

L

cm

PDG PDG

2MeVc 6092284 2004PDG

First Observation

Using low Q-value modes

6

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

BaBar as a Charm Baryon Factory

Access to rare decay modes amp

High precision studies of charm baryon properties 5

Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc

+ with PDG Lc+

mass added more precise Lc+ mass measurement affects these baryon mass measurements

PhysRevD720520062005

2

0

S

MeVc 179Q

evts 844627

KK

LL

c

2

0

S

0

MeVc 102Q

evts 20264

KK

L

c

2MeVc )(1440)(04205012286

)( 0

syststat

mKKc

S

L L

2MeVc )(1260)(18103032286

)( 00

syststat

mKKc

S

L

2MeVc 140462286)(

tmeasuremen Combined

L

cm

PDG PDG

2MeVc 6092284 2004PDG

First Observation

Using low Q-value modes

6

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc

+ with PDG Lc+

mass added more precise Lc+ mass measurement affects these baryon mass measurements

PhysRevD720520062005

2

0

S

MeVc 179Q

evts 844627

KK

LL

c

2

0

S

0

MeVc 102Q

evts 20264

KK

L

c

2MeVc )(1440)(04205012286

)( 0

syststat

mKKc

S

L L

2MeVc )(1260)(18103032286

)( 00

syststat

mKKc

S

L

2MeVc 140462286)(

tmeasuremen Combined

L

cm

PDG PDG

2MeVc 6092284 2004PDG

First Observation

Using low Q-value modes

6

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Production from B decays (+some continuum)

Continuum production

7

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Study of baryon production in B decays

Substantial B meson decay to Xc0+

First observations of these decays

Branching Fractions amp cross section measurements

BF measurement (Phys Rev D 78 112003(2008))

indicates 3-body final state favored in agreement with the predictions of

Hou and Soni (Phys Rev Lett 86 4247 (2001))

Spin measurement possibilities (Phys Rev D 78 112003(2008))

Use of B- Lc

+ p p- to get mass width

and spin of c(2455) distribution favors

spin 12 [solid line] over

spin 32 [dotted curve]

efficiency-corrected

background-subtracted

Xc

_

8

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Precision mass and width measurements on excited charm cascades

Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+

and the Xc(3123)+

First observation of the excited singly charmed baryon 11131151113115Wc(css) in

the radiative decay Wc 1113115Wc

0 g1113115

First observation of a charm baryons decayingto a charm meson

First observation of the Lc(2880)+ in D0p decay

Discovery of a new state at m = 29398 MeVc2

9

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

From charm baryon

decays

10

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

PRL 97 112001(2006)

11

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

Only obvious structure

X (1530)0 rarr X- p+

Lc+ signal region

Rectangular Dalitz plot

Note m2(X- K+) depends linearly on cosqX

12

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

wj = radic10 P2(cosq)

unweighted

uncorrected

efficiency-corrected unweighted

m(X- p+) distribution in data

X(1530)0

wj = radic10 P2(cosq)

from Lc+ signal

region

wj = (7 radic2) P4(cosq)

from Lc+ signal

region

Efficiency-corrected

P2 Moment Dist

Efficiency-corrected

P4 Moment DistLc

+ signal

region

spin 32 clearly established

spin 52 ruled out

analysis by establishing J=32

also established positive parity

(ie P-wave)

Spin 52 Test

bull PL moments (L ge 6) give no signal

Spin 32 Test

Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information

13

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

cosq

L

m(L KS) (GeVc2)

Accumulation of events in KSK+

near threshold evidence of a0(980)+

L KS

a0(980)+

X(1690)0

For J(X[1690]) = 12

Background-subtracted efficiency-corrected

data

― Integrated signal function smeared by mass

resolution [Histogram]

― Signal function with no resolution smearing

― |A(a0(980)|2 contribution

― |A(X(1690)|2 contribution

― Interference term contribution

For the X(1690)0 we obtain

m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2

G = 93-17

+20(stat)plusmn 04(syst) MeV

J =12 favored

14

14

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Insight into charm baryon production

Measurements of charm baryon spin from exclusive B decay processes

Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay

L )2393(c

Lc

cX

0

cW

cW

L )2625(c

L )2880(c

L )2940(c

)2520(c

)2800(c

cX

)2645(cX

)2790(cX

)2815(cX

)2980(cX

)3077(cX

)3055(cX

)3123(cX

15

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

16

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

charmonium

Discovery of a narrow width state with mass 31 GeV

discovery of the charm quark

Jy was the first observed cc

bound state

SLAC

ψ(3100)

e+e-rarrhadronspN rarr e+e- X

J

BNL

Jψ resonance

by SLAC

and BNL

PR

L 3

3 1406 (

1974)

PR

L 3

3 1

404 (1

974)

17

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

JPC = 1- -

B rarr cc K() decay Initial state radiation

Two-photon collision

C= + J= 0 2

Double charmonium

production

Recoil against

Jy C = +18

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

All charmonium production mechanisms seen at BaBar

The X(3872) a charmonium-like state

in Bplusmn rarr Kplusmn Jψ pp- decays

(PRD77 111101(2008)) opened the

door to exotic meson interpretations BaBar pins down C-parity (+) from

observation of the X in Jy g and

excludes the isovector hypothesis

from lack of evidence for a charged

partner

BaBar discovers the Y(4260) in ISR

e+e- rarr gISR Y(4260) rarr Jψ pp- decays

and the subsequently the Y(4350) in

e+e- rarr gISR Y(4350) rarr ψ(2S) pp-

(PRL95 142001(2006))

Improbable interpretation of both

states as charmonium

Also significant BaBar contributions to

charmonium states seen in double charmonium

production amp 2 photon collisions

(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))

Y(4260) rarr Jψ pp-

19

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

20

bottomonium

CUSB Collaboration

observed bb

bound state

20

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

21

Opened the doorhellip

over 30 years of discoveries in the Bottomonium Sector

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

The Search for the hb at BaBar

22

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

BF measurements

B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4

Compatible with predictions

Combined values of mass and HF splitting

mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)

(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2

The hb(1S) discovered in Y(3S) data

and confirmed in Y(2S) data

S Godfrey JL Rosner

PRD 64 074011 (2001)

hbhb

23

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

bullResolution dominated

bullSmall Doppler broadening

)2( )2( SPbJ g

Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions

24

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Evidence for the hb(1P) in the decay (3S) pohb

bull 10814plusmn 2813 signal events

M(hb) = 9902plusmn4 plusmn2 MeVc2

(CG=989987plusmn027 MeVc2 )

uncertainty from

background fit

background-subtracted result

hb signal

region

PhysRev D84 (2011) 091101

25

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

PhysRevLett 108 032001 (2012)

hb(2P)

bull Measured hb(12P) mass values consistent with predictions

bull BaBar hb(1P) mass measurement consistent with Bellersquos

bull Observed hb production rate enhancement may be indicative of exotic process violating

HQ spin-flip suppression

hb(1P)

The hb(1P) and hb(2P) seen by Belle

in e+e-rarr pp- transitions at the (5S)

pp- recoil mass spectrum

26

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27

Spectroscopy at J-Lab with 12 GeV

Unique photo-production research

opportunities to identify exotics by

amplitude analyses of final states

hadron spectroscopy by coherent

bremsstrahlung production in Hall D

and by tagged (quasi-)real photoproduction

in Hall B to yield complementary results

Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy

heavy flavor baryon data hellip

COMPASS hadron program is to study the light-quark hadron spectrum and in

particular to search for evidence of hybrids and glueballs (COMPASS confirms

previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)

BESIII continues to make detailed explorations of the region just above the

charmonium threshold

BaBar continues to produce interesting results such as the analysis of BrarrJψ f K

[hep-ex 14077244 recently accepted in PRD] that shows an interesting

structure in m(Jψ f)hellip 27