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Fernando Martínez-Vidal
IFIC, Universidad de Valencia-CSIC
Concurso-Oposición CSIC29 de Septiembre de 2004
BaBar & SuperBBaBar & SuperB
Fernando Martínez-Vidal IFIC, Universitat de València-
CSIC
IN2P3-MICINN meetingIN2P3-MICINN meeting
January 12, 2008, MadridJanuary 12, 2008, Madrid
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 2
Final collisions 12:43pm,Monday 7 Apr 2008
Runs 1-4
Runs 1-5
362 published as today475M Y(4S)BB
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 3
×10 enhancement of world sample of Y(3S) & Y(2S) decays
• Enhance knowledge on spectroscopy
– Missing SM b(nS), hb(nS)
– Look for surprises
• Search for exotic physics, like
– Light dark matter candidate – NMSSM light Higgs a1
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 4
• First strong evidence of D0-D0 mixing (May’07)• Unexpected discovery of many new states:
+ b (Aug’08)
[many of these already published]
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 5
• b decays mostly via two gluons, exclusive modes not known
• Search for bump in photon energy spectrum
Consistent with M1 transition (0.3-0.7)
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 6
• IFIC, University of Valencia-CSIC (5)– 1 Faculty, 2 PhD Staff, 2 Grad
• University of Barcelona (2)– 1 Faculty, 1 Grad
• LAPP-Annecy (7)– 1 Faculty, 2 PhD Staff, 4 Grad
• Ecole Polytechnique (5)– 1 Faculty, 2 PhD Staff, 1 Non-PhD
Staff, 1 Grad
• LAL, Orsay (24)
– 8 Faculty, 1 PhD Staff, 8 Non-PhD Staff, 7 Grad
• Saclay (6)
– 4 PhD Staff, 2 Non-PhD Staff
• Univ. Paris VI & VII (10)
– 4 Faculty, 1 PhD Staff, 5 Grad
24 PhD(8.8%)
4 PhD(1.2%)
OCF 09 count (based on October 2008)
Operating Common Fund Basis
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
The “core” Physics Analysis Program(Intense Analysis Period, 2008-2010)
+ Y(nS) Physics (SM & Exotics)
• Precise extraction of DKe, e, KKe, Ke form factors (LQCD)• LAL• Publications: PRD 76, 052005 (2007), PRD 78, 051101 (2008), Eur.Phys.J.C52, 975 (2007)
D0 mixing and CPV in DKS+-, KSK+K- (Dalitz method, golden)
• Measurement of CKM angle with GLW, ADS and Dalitz (golden) techniques• BaBar combination (Dalitz+ADS+GLW)• LAL, LAPP, Ecole Polytech., Paris VI&VII• Publications: PRL 95, 121802 (2005), PRD 78, 034023 (2008), PRD77, 111102 (2008), PRD78, 092002 (2008),…
• Measurement of B0 and B+ lifetimes, B0 mixing, and observation of CP Violation• Paris VI&VII, LAPP, LAL, Ecole P., Saclay • Publications: PRL 87, 091801 (2001), PRL87, 201803 (2001), PRL 88, 221802 (2002), PRD 66, 032003 (2002),…
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 8
Estudios fenomenológicos y análisis de datos en el experimento BaBar de la Factoría de B’s de SLAC (EEUU): violación de CP, retorno radiativo y Física del quark charmCICYT-IN2P3 2005-03, CICYT-IN2P3 2006-19 F. Martinez-Vidal, IFIC, Valencia – A.M. Lutz, LAL
Estudio de las desintegraciones semileptónicas de hadrones charm en el experimento BaBar.MCCIN – IN2P3 2008 (NUC2008-000265)A. Oyanguren, IFIC, Valencia – P. Roudeau, LAL
Bilateral funding (history)R-ratio measurement in the BaBar experiment CICYT-IN2P3 2004, E. Grauges, UB – M. Davier, LAL
Producción de estados excitados en las desintegraciones semileptónicas de los mesones B y estudio de los sucesos con 4 jetsCICYT–IN2P3 PP99-1 (1998-2004)J. Salt, IFIC, Valencia – P. Roudeau, LAL
Estudio de la probabilidad de desintegración Zbb y de las oscilaciones de los mesones B0-B0 mediante técnicas de análisis multidimensionalCICYT–IN2P3 PP89-1 (1992-1997)A. Ferrer, IFIC, Valencia – Ch. De la Vaissiere, Paris VI&VII
BaB
arD
EL
PH
I
…among others
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 9
b
s
s
s d d
, ,(KK )CP
KS0
If there is New Physics at the TeV scale it must have a flavor/CP structure NP must couple to the SM, and the SM violates flavor
New heavy quanta can be detected through precision measurement of processes involving loop diagrams
Statistics of O(50 ab-1) is necessary to reduce the experimental error below the theoretical uncertainty for the most sensitive analyses
Physics reach is complementary to LHCb: many rare decays are not accessible at LHC sensitivity to off-diagonal term of squark mixing matrix test of LFV in decays
BaBar SuperB/SuperBelle
1034 luminosity to have measurable effects (anyhow) if NP particles are at EW scale
1036 luminosity to have measurable effects (anyhow) if NP particles are at TeV scale
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 10
Crab waist scheme
Small crossing area
IP
The accelerators
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 11
SuperB/SuperBelle
BASELINE
OPTION
New detector elements (BaBar)
Quite similar for SuperBelle(but larger backgrounds)
– Photon detection for DIRC quartz bars – Forward PID system (TOF or focusing RICH)– Forward calorimeter crystals (LSO)– Minos-style scintillator for IFR– Electronics and trigger – Computing – large amount of data
• Babar/Belle has been proved excellent detectors for B-physics Use same approach and reuse many elements
• Moderate R&D and engineering required– Small beam pipe technology– Thin silicon pixel detector for first layer (~1 cm, <0.5%X0,
~100m)– Drift chamber CF mechanical structure, gas and cell size– Photon detection for DIRC quartz bars
Better vertexing & better hermiticity important for many measurements
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 12
6 layers at radius from 1.3 cm to 14 cm, 4× more readout channels than in SVD2 (BELLE): Speed!
2 layers of pixel detectors
4 layers of strips
Beam-pipe (r=1cm)
SuperBelle Vertex Detector
SuperBelle has adopted DEPFET as the technology for the pixel detectors
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 13
• Spanish contribution DEPFETs Collaboration • Goals:
• Use DEPFET sensors in ILC vertex detector• Recently, use DEPFET in SuperBelle as intermediate project
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 14
SuperB Vertex Detector
40 cm30 cm
20 cm
Layer0
Layer Radius
0 1.2 cm 1 3.3 cm 2 4.0 cm 3 5.9 cm 4 9.1 to 12.7 cm 5 11.4 to 14.6 cm
Layer Radius
0 1.2 cm 1 3.3 cm 2 4.0 cm 3 5.9 cm 4 9.1 to 12.7 cm 5 11.4 to 14.6 cm
• The BaBar SVT technology is adequate for r > 3cm: use design similar to SuperB SVT
• Layer0 is subject to large backround and needs to be extremely thin: > 5MHz/cm2, 1MRad/yr, < 0.5%X0
Striplets option: mature technology, not so robustagainst background.• Moderate R&D needed on module
interconnection/mechanics/FE chip (FSSR2) CMOS MAPS option • New & challenging technology• Can provide the required thickness • Existing devices are too slow• Extensive R&D ongoing (SLIM5-
Collaboration) on 3-well devices 50x50um2
Hybrid Pixel Option: tends to be too thick.• An example: Alice hybrid pixel module ~ 1% X0 • Possible material reduction with the latest
technology improvements• Viable option, although marginal
Layer 0Layers 1-5
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 15
Plans for SuperB/SuperBelle We are interested to contribute to SuperB and/or SuperBelle Good projects for vertex detector construction (as intermediate project before ILC), with similar schedules
SuperBelle: Layers 1-2, DEPFETs (~2009-2013) DEPFET Collaboration
SuperB: Layers 1-5, strips, FE chips (~2009-2015) Good experience and infrastructure, lack of man power (yet)
Very interesting luminosity domain (L>50 ab-1) to explore between ~2014-2020 Decisions to be taken during 2009, for project applications in 2010
B
MH+=350 GeV
Higgs-mediated NP in MFV at large tan
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 16
Venue for the June 2009BABAR collaboration meeting
Valencia
June 22nd to 25th, 2009
MCCIN-IN2P3 Meeting, Madrid, 12nd May, 2008
F. Martinez-Vidal. BaBar & SuperB 17
RD: (3.03 0.16 0.10) x 10-3
x’2: (-0.22 0.30 0.21) x 10-3
y’: (9.7 4.4 3.1) x 10-3
Best fit
Best fit, ’2 ≥ 0
+ No mixing: (0,0)
1 – CL =3.17 x 10-1 (1)4.55 x 10-2 (2)2.70 x 10-3 (3)6.33 x 10-5 (4)5.73 x 10-7 (5)
Contours at 1 intervals
The no-mixing point is at the 3.9 contour
• Analysis of the proper time distribution of WS events permits extraction of D0 mixing parameters y’, x’2
Evidence confirmed by Belle and CDF