Compressed Mass Scenarios via VBF Dijet and ISR Jet ...people.physics.tamu.edu/kamon/research/talk/2016/...SUS-14-019 250 GeV 315 GeV. 250 GeV 315 GeV Teruki Kamon 20 ISR vs. VBF in

Mitchell Institute for Fundamental Physics and Astronomy

Texas A&M University

&

Kyungpook National University

Electroweak and Compressed SUSY Event

at the LPC

Fermilab, April 29, 2015

Teruki Kamon

April 2016 1CMS via VBF/ISR

Compressed Mass Scenarios via

VBF Dijet and ISR Jet Tagging at

the LHC

Questions

Teruki Kamon 2

What do we do with (i) really heavy 1st/2nd generation squarks and/orgluino, and (ii) small DM (mass difference between NLSP and LSP)?

How can we probe Compressed SUSY Scenarios at hadron collides?1) Tagging energetic jets (+ MET) from cascade decays2) Tagging leptons3) Tagging photons4) Tagging with timing, vetexing5) ISR jet, VBF dijet

ISR jet tagging VBF-like dijet tagging

CMS via VBF/ISR

Let me give you a private viewon ISR and VBF

Selected Papers on ISR and VBFJ.F. Gunion and S. Mrenna, “A study of SUSY

signatures at the Tevatron in models with near

mass degeneracy of the lightest chargino and

neutralino”, PRD62 (2000) 015002 [9906270]

Yang Bai and Tim M.P. Tait, “Inelastic Dark

Matter at the LHC”, PLB 710 (2012) 335

[1109.4144] (MonoJet + Decay Vertex)

Ning Zhou, David Berge, Daniel Whiteson, “Mono-

everything: combined limits on dark matter

production at colliders from multiple final

states”, PRD 87 (2013) 095013 [1302.3619]

Chengcheng Han, Archil Kobakhidze, Ning Liu,

Aldo Saavedra, Lei Wu and Jin Min Yang,

“Probing light higgsinos in natural SUSY from

monojet signals at the LHC,” JHEP 02 (2014)

049 [1310.4274]

Pedro Schwaller and Jose Zurita, “, Compressed

electroweakino spectra at the LHC “. JHEP 03

(2014) 060 [1312.7350]

Howard Baer, Azar Mustafayev, Xerxes Tata,

“Monojets and mono-photons from light

higgsino pair production at LHC14”, PRD 89

(2014) 055007 [1401.1162]

Zhenyu Han, Graham D. Kribs, Adam Martin,

Arjun Menon, “Hunting quasi-degenerate

higgsinos”, PRD 89 (2014) 075007 [1401.1235]

Howard Baer, Azar Mustafayev and Xerxes Tata,

“Monojet plus soft dilepton signal from light

higgsino pair production at LHC14”, PRD 90

(2014) 115007 [1409.7058]

Zhenyu Han and Yandong Liu, “MT2 to the

rescue -- searching for sleptons in

compressed spectra at the LHC”, PRD 92

(2015) 015010 [1412.0618]Teruki Kamon 3CMS via VBF/ISR

Selected Papers on ISR and VBFA. Datta, P. Konar, and B. Mukhopadhyaya,

“Invisible charginos and neutralinos from

gauge boson fusion: a way to explore anomaly

mediation”, PRL 88 (2002) 181802.

G. Giudice, T. Han, K. Wang, and L.T. Wang,

“Nearly degenerate gauginos and dark matter

at the LHC”, PRD 81 (2010) 115011

B. Dutta, A. Gurrola, W. Johns, T. Kamon, P.

Sheldon, K. Sinha, “Vector boson fusion

processes as a probe of supersymmetric

electroweak sectors at the LHC”, PRD 87 (2013)

035029 SUS-14-005

A.G. Delannoy, B. Dutta, A. Gurrola, W. Johns, T.

Kamon, E. Luiggi, A. Melo, P. Sheldon, K. Sinha,

K. Wang, S. Wu, “Probing dark matter at the

LHC using vector boson fusion processes”,

PRL 111 (2013) 061801 SUS-14-019

B. Dutta, W. Flanagan, A. Gurrola, W. Johns, T.

Kamon, P. Sheldon, K. Sinha, K. Wang, S. Wu,

“Probing compressed top squarks at the LHC

at 14 TeV”. PRD 90 (2014) 095022.

B. Dutta, T. Ghosh, A. Gurrola, W. Johns, T.

Kamon, P. Sheldon, K. Sinha, K Wang, S. Wu,

“Probing Compressed Sleptons at the LHC

using Vector Boson Fusion Processes”, PRD

91 (2015) 055025 [1411.6043]

A. Berlin, T. Lin, M. Low, L.-T. Wang, “Neutralinos

in Vector Boson Fusion at High Energy

Colliders”, PRD 91 (2015) 115002 [1502.05044]

B. Dutta, A. Gurrola, K. Hatakeyama, W. Johns, T.

Kamon, P. Sheldon, K. Sinha, S. Wu, Zhenbin Wu,

“Probing Compressed Bottom Squarks with

Boosted Jets and Shape Analysis”, PRD 92,

(2015) 095009 [1507.01001] SUS-14-019

Teruki Kamon CMS via VBF/ISR 4

5

Selected Papers on ISR and VBF

Marco Cirelli, Filippo Sala, Marco Taoso, “Wino-like Minimal Dark Matter and future colliders”, JHEP

10 (2014) 033, Erratum-ibid. 01 (2015) 041 [1407.7058]

More … but I simply didn’t have a chance to update ….

Inspired by this workshop:

Teruki Kamon CMS via VBF/ISR

6

“VBF” Cross SectionsPRL 111 (2013) 061801

100 TeV14 TeV8 TeV

Tathagata Ghosh, Aspen 2015


7

“VBF” Cross Sections [II]Tathagata Ghosh, Aspen 2015

100 TeV14 TeV8 TeV

A. Berlin, T. Lin, M. Low, L.-T. Wang, “Neutralinos in Vector Boson

Fusion at High Energy Colliders,” PRD 91 (2015) 115002

[1502.05044]

agree


100 TeV

14 TeV

“VBF” luminosity, stronger as Ecm goes up.

ISR Invisible vs. VBF Invisible

VBF-like jet pair, pT,j1, pT,j2 > 50 GeV, |η| < 4.7, ηj1*ηj2 < 0, ∆ηjj > 4.2, and Mjj > 1100 GeV; Df(j1,j2) < 1.0

MET > 130 GeV Central jet veto (event that has an

additional jet with pT > 30 GeV and pseudorapidity between those of the two tag jets); Lepton veto with pT > 10 GeV.

One energetic jet, pT > 110 GeV, |h| < 2.4, and allow an additional jet (pT > 30 GeV)

MET > 250 GeV 500 GeV Veto event if j3 pT > 30 GeV; Veto

event if Df(j1,j2) > 2.5 Veto event if they contain isolated

electrons or muons with pT > 10 GeV; or hadronic tau with > 20 GeV

EPJC 75 (2015) 235 [1408.3583],

CMS-EXO-12-048, CERN-PH-EP-2014-164

EPJC 74 (2014) 2980 [1404.1344], CMS-HIG-13-

030, CERN-PH-EP-2014-051

8Teruki Kamon CMS via VBF/ISR

CMS Preliminary

9

ISR Invisible vs. VBF Invisible

Lepton IDBetter withlow pT, large h

Z/W ratio ~ 3 Z/W ratio ~ 1/2


DM particles have the direct couplings to the SM Higgs boson sector, H➝cc; (a) Limits on branching fraction of Higgs to “invisible” particles used for limits on DM, (b) Scalar, vector or fermionic couplings, (c) Limits only up to DM mass Mc < MH/2

10

Higgs portal to DM: H(inv)EPJC 74 (2014) 2980 [1404.1344], CMS-HIG-13-030, CERN-PH-EP-2014-051

Good S/B ratio

Poor S/B ratio


Teruki Kamon 11

VBF SUSY/DM EFT vs. VBF H(inv)

VBF-like jet pair, pT,j1, pT,j2 > 50 GeV, |η| < 4.7, ηj1*ηj2 < 0, ∆ηjj > 4.2, and Mjj > 1100 GeV

MET > 130 GeV Df(j1,j2) < 1.0 Veto events with an identified

electron, or muon with pT > 10 GeV. Central jet veto (event that has an

additional jet with pT > 30 GeV and pseudorapidity between those of the two tag jets)

CMS-SUS-14-019 PAS arXiv:1404.1344, CMS-HIG-13-030, CERN-PH-EP-2014-051, EPJC 74 (2014) 2980.

CMS via VBF/ISR

VBF-like jet pair, pT,j1, pT,j2 > 50 GeV, |η| < 5, ηj1*ηj2 < 0, ∆ηjj > 4.2, and Mjj > 750 GeV

MET > 250 GeV Df(MET,j2) > 0.5 Veto events with an identified

electron, or muon with pT > 10 GeV; tau with pT > 15 GeV;

Central jet veto (event that has an additional jet with pT > 30 GeV or b-tagged jet with with pT > 20 GeV, and pseudorapidity between those of the two tag jets)

c

c

(Dirac Fermion)

R. C. Cotta, J. L. Hewett, M. P. Le, T. G. Rizzo,

Phys. Rev. D 88, 116009 (2013) [1210.0525]

d = 5 Higgs portal operator ccVV

Teruki Kamon 12

VBF SUSY vs. VBF H(inv)

CMS vis VBF/ISR

Z/W ratio ~ 2 Z/W ratio ~ 1/2

Mjj [GeV]

Next Gen. Searches via VBF

XMETjj

The final state is same as invisible Higgs signal, but larger pT jets

Cross section? Wino-like DM Bino-Higgsino DM

Example, disappearing tracks?

13

CMS-EXO-12-034, JHEP 01 (2015) 096 [1411.6006] Search for

disappearing tracks in events with jet pT > 100 GeV, MET > 100

GeV for direct production of C1N2 and C1C1.


14

“Long-Lived” (LL) Interpretations

[EXO-13-006, EPJC 75 (2015) 325] “Constraints on the pMSSM, AMSB model and on other models from the search for LL charged particles in proton-proton collisions at sqrt(s) = 8 TeV”.

[EXO-12-034, JHEP 01 (2015) 096] Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV” … Disappearing tracks (as a signature of LL particle decaying inside the CMS detector) are identified as those with little or no associated calorimeter energy deposits and with missing hits in the outer layers of the tracker. Limits are set on the cross section of direct electroweak chargino production in terms of the chargino mass and mean proper lifetime.


15

Wino DM with ISR, VBF and DTMarco Cirelli, Filippo Sala, Marco Taoso, “Wino-like Minimal Dark Matter and future colliders”, JHEP 10 (2014) 033, Erratum-ibid.

01 (2015) 041 [arXiv:1407.7058v2]

!


16

Light Higgsinos in MonoJetDetecting light Higgsinos in ISR jet tagging (Monojet events)”. See arXiv:1310.4274(*), for example. See also the next page. We see a reach at ~200 GeV at 14 TeV ( 100 TeV?)

(*) Chengcheng Han, Archil Kobakhidze, Ning Liu, Aldo Saavedra, Lei Wu and Jin Min Yang, “Probing

light higgsinos in natural SUSY from monojet signals at the LHC,” JHEP 02 (2014) 049

[arXiv:1310.4274]


A. Berlin, T. Lin, M. Low, L.-T. Wang, “Neutralinos in Vector Boson Fusion at

High Energy Colliders,” PRD 91 (2015) 115002 [1502.05044]

Wino and Higgsino via VBF

Teruki Kamon 17CMS via VBF/ISR

Given a systematic uncertainty of 5% with 3000 fb−1[LHC14] 125 GeV Winos and 55 GeV Higgsinos

[100 TeV] 750 GeV Winos and 180 GeV Higgsinos

We want to lower lepton pT threshold and cover larger h coverage for future detector.

[Comments]

The forward detector system (tracking, calorimeter, muon) must be good for lepton veto and vertexing for forward jets.

Ultra-fast timing on forward calorimeter for trigger?

Central tracking, calorimeter, muon – lepton ID from 5 GeV??

Teruki Kamon 18

3rd Generation Squark

SUS-14-001 [1503.08037]

JHEP 06 (2015) 116 SUS-13-009 (monojet stop)

SUS-13-015 (stop)

SUS-13-018 (sbottom)

12

3 4

1 2 3 4

1

2

3

4 3

CMS SUSY and X

CMS Preliminary

VBFSUS-14-019

Teruki Kamon 19

Compressed 3rd Generation Squarkhttps://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsSUS14001

JHEP06(2015)116 [1503.08037]

250 GeV

MonojetSUS-14-001

CMS SUSY and X

MonojetSUS-14-001

VBFSUS-14-019

315 GeV250 GeV

250 GeV 315 GeV

Teruki Kamon 20

ISR vs. VBF in Case of Compressed SUSY

MonojetSUS-14-001

VBFSUS-14-019

CMS SUSY and X

VBF PRD 92 (2015) 095009 [1507.01001]

541 GeV at 95%CL for 50PU

VBF jj + sbottomsISR jet + sbottoms?ISR g + sbottoms?

Haipeng An and Lian-Tao Wang, arXiv:1506.00653

The search feasibility for stop events in M(stop) – M(chi) >~ 20 GeV, where a pair of stops are produced in association with a hard jet.

The investigated region includes the region in VBF stop paper(arXiv:1312.1348, PRD 90 (2014) 095022)

See Fig. 3. On the line for M(chi) = M(stop) – M(top), the 5-sigma reach is 400 (600) for 300 fb-1 (3000 fb-1) in ISR tagging, while we could obtain those reaches via VBF.

Stops in Monojets

Teruki Kamon 21

David Shih: http://arxiv.org/abs/1506.07885

Hagiwara: http://arxiv.org/abs/1307.1553

12 3 4

CMS SUSY and X

315 GeV(8 TeV)

http://arxiv.org/abs/1506.07885

http://arxiv.org/abs/1307.1553

Teruki Kamon 22

Electroweak (EWK) Sector

x = 0.5 (maximum sensitivity)

Wino-Chargino and Bino-LSP

Up to ~700 and ~300 GeV for light slepton case

Up to 320 and 100 GeV for W and Z cases

Lower limits for heavy slepton

being Higgsinos

small mass difference

(compressed spectra)

CMS via VBF/ISR

SUSY VBF + MET + 2 Leptons

The first SUSY search of its kind in VBF topology (Inclusive muon trigger and diTau trigger

mu-mu, mu-e, mu-tau, tau-tau ; OS & LS

[SUS-14-005, JHEP 11 (2015) 189] “Search for supersymmetry with the

vector boson fusion topology in proton-proton collisions at /s = 8 TeV”

Teruki Kamon 23

Run 2: VBF + soft lepton triggers (see Sho Maruyama’s talk)

CMS via VBF/ISR

SUSY VBF + MET + 2L

Teruki Kamon 24

MG5, |Dh| > 4.2QCD2QED2 + QCD0QED4

SUS-14-005 SUS-14-005

CMS via VBF/ISR

SUSY VBF 2L vs. Direct 3L

Teruki Kamon 25

MG5, |Dh| > 4.2QCD2QED2 + QCD0QED4

SUS-13-006

EPJC 74 (2014) 3036 [1405.7570]SUS-14-005

x = 0.5 (maximum sensitivity)x ~ 0.95 (maximum sensitivity)

CMS via VBF/ISR

SUSY + Another Higgs Wanted MSSM Higgs (e.g., A H and H+H-), Non-MSSM Higgs

Colored Sectors

Gluinos

Heavier(?) 1st/2nd generation scalar quarks (squaks)

Lighter(?) 3rd generation squarks (stop, sbottom)

Charginos (C1, C2), Neutralinos (N1, N2, N3, N4), decaying into: Leptons, Higgs, W, Z

LSP? Lightest Neutralino (N1): Bino-like, Wino-like, Higgsino-like,

Bino-Higgsino-like ..[Example] Higgsino LSP chargino and neutralinosbelow 200 GeV, with mass splittings of order 10 GeV. It is very difficult for LHC to observe these particles. Gravitino

Sleptons Selectrons and smuons - mass degenerate? Special case: Stau is lighter.

Displaced Tracks

Long-Lived (LL)

RPV + ???

Compressed scenarios at hadron collides


“VBF” luminosity, stronger as Ecm goes up.

Physics menu with VBF dijet and ISR jet tagging: Invisible, Higgsino, Wino, Stop, Sbottom, Slepton

Central tracking, calorimeter, muon – lepton ID from 3-5 GeV??

The forward detector system (tracking, calorimeter, muon) must be good for lepton veto and vertexing for forward jets.

Ultra-fast timing on VF calorimeter for trigger?

Summary


Documents

Compressed Mass Scenarios via VBF Dijet and ISR Jet ...people.physics.tamu.edu/kamon/research/talk/2016/...SUS-14-019 250 GeV 315 GeV. 250 GeV 315 GeV Teruki Kamon 20 ISR vs. VBF in