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Particle Physics 2008. Some news from conferences and experiments: ICHEP, D0 - 2008. V. Šimák, FJFI ČVUT Praha. Exotic c- cbar Resonances and Upsilon Spectroscopy Light Hadron Spectroscopy & Charmonium Heavy Flavor Theory Decays of Open Charm Lattice QCD

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Particle Physics 2008


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    1. Particle Physics 2008 Some news from conferences and experiments: ICHEP, D0 - 2008 V. Šimák, FJFI ČVUT Praha

    2. ATLAS sem. 29-9-2008

    3. Exotic c-cbarResonancesandUpsilonSpectroscopy Light Hadron Spectroscopy & Charmonium HeavyFlavorTheory Decaysof Open Charm Lattice QCD ReviewofHeavy Ion Experiment TheoreticalReviewofHeavy Ion Physics RecentProgress in FormalTheory EarlyUniverse ($t < 1 \mu$s) LateUniverse ($t > 1 \mu$s) SearchforDarkMatter Status of ILC AcceleratorandDetectors LatestDevelopments in Technologies forDetectors ICFA Summary Report from C11 CombinedanalysisofElectricDipoleMomentsandLeptonFlavorViolatingRareDecays ReviewofResultsfromPierreAugerObservatory, High-energyGamma-ray Astronomy and Neutrino Astronomy Observationofthebottomoniumgroundstate, eta-b, atBaBar ConcludingInspirationalTalk ATLAS sem. 29-9-2008

    4. ATLAS sem. 29-9-2008

    5. ATLAS sem. 29-9-2008

    6. ATLAS sem. 29-9-2008

    7. ATLAS sem. 29-9-2008

    8. ATLAS sem. 29-9-2008

    9. ATLAS sem. 29-9-2008

    10. ATLAS sem. 29-9-2008

    11. ATLAS sem. 29-9-2008

    12. ATLAS sem. 29-9-2008

    13. ATLAS sem. 29-9-2008

    14. ATLAS sem. 29-9-2008

    15. ATLAS sem. 29-9-2008

    16. ATLAS sem. 29-9-2008

    17. ATLAS sem. 29-9-2008

    18. ATLAS sem. 29-9-2008

    19. ATLAS sem. 29-9-2008

    20. b 0 1 0.03-0.3 Higgs ggH b BSM Higgs Searches for the Higgs Boson ATLAS sem. 29-9-2008

    21. Other BSM Higgs Searches • DØ: H benchmarked as SM search • Fermiophobic Higgs • At lower mass large BR(H) ~10% • Key issue: understanding QCD background: uses excellent calorimeter • Other BSM Higgs Searches • WHWWW (also SM), charged Higgs, decays to and from top… • Babar: A0, invisible light Higgs decay • Photon+Missing energy in Y(3S) decays • Key issue: e+e- background • For mA<7.8GeV 2.6 signal Models: up to x10-4 BR(Y(3S)A0) < 0.7-31x10-6 ATLAS sem. 29-9-2008

    22. W+ H μ+ W+ W- ν e- W- SM Higgs: HWW • HWWll - signature: Two high pT leptons and MET • Primary backgrounds: WW and top in di-lepton decay channel • Key issue: Maximizing lepton acceptance • Innovations: CDF/DØ : Inclusion of acceptance from VH(CDF) and VBF CDF : Combination of ME and NN approaches, DØ Reoptimized NN Spin correlation: Charged leptons go in the same direction ν ATLAS sem. 29-9-2008

    23. SM Higgs: HWW • Most sensitive Higgs search channel at the Tevatron Results at mH = 165GeV : 95%CL Limits/SM Both experiments Approaching SM sensitivity! ATLAS sem. 29-9-2008

    24. SM Higgs Combined Limits • Limits calculating and combination • Using Bayesian and CLs methodologies. • Incorporate systematic uncertainties using pseudo-experiments (shape and rate included) (correlations taken into account between experiments) • Backgrounds can be constrained in the fit • Low mass combination difficult due to ~70 channels • Expected sensitivity of CDF/DØ combined: <3.0xSM @ 115GeV ATLAS sem. 29-9-2008

    25. High mass only Exp. 1.2 @ 165, 1.4 @ 170 GeV Obs. 1.0 @ 170 GeV SM Higgs Excluded: mH = 170 GeV ATLAS sem. 29-9-2008

    26. SM Higgs Excluded: mH = 170 GeV We exclude at 95% C.L. the production of a SM Higgs boson of 170 GeV SM Higgs Combination Result verified using two independent methods(Bayesian/CLs) 95%CL Limits/SM ATLAS sem. 29-9-2008

    27. ATLAS sem. 29-9-2008

    28. ATLAS sem. 29-9-2008

    29. ATLAS sem. 29-9-2008

    30. ATLAS sem. 29-9-2008

    31. ATLAS sem. 29-9-2008

    32. 1/3 ATLAS sem. 29-9-2008

    33. Experimental Neutrino Physics ATLAS sem. 29-9-2008

    34. ATLAS sem. 29-9-2008

    35. Part B Basic idea of “unparticle” physics (H. Georgi 07;Banks & Zaks 82): Dim. of OSI Dim. of OU SM particles Effective operator νi νj νi νj U messenger MU U e e scale-invariant sector High-energy scale Intermediate scale Dim.-transmutation ΛU First application to ’s (S. Zhou 07): Li et al 07; Majumdar 07; Anchordoqui, Goldberg 07; Montanino et al 07; Balantekin, Ozansoy 07; Gonzalez-Garcia et al 08… Neutrino decay -e scattering Unparticle and ’s ATLAS sem. 29-9-2008

    36. ATLAS sem. 29-9-2008

    37. ATLAS sem. 29-9-2008

    38. ATLAS sem. 29-9-2008

    39. Conclusion • Results start to probe NP but limited by statistics: • B →tn, AFB, isospin asymmetry • B (BXsg) strong constraint to NP • DS puzzle may no longer an issue. • Need an order magnitude more luminosity SuperB: clean environment ; LHCb ATLAS sem. 29-9-2008

    40. ATLAS sem. 29-9-2008

    41. Rare Decays and New Physics -K, t, U(nS) - B→tn -DS and DA - b→sg, B→K*ll - B→K*nn, Bd,S→ l+l- ATLAS sem. 29-9-2008

    42. Acp(K0p0) DA(Kp) • Sum rule predicts Acp(K0p0) = -0.151±0.043 Model independent checks for NP • M. Gronau, PLB 627, 82 (2005); D. Atwood & A. Soni, Phys. Rev. D 58,036005(1998). New B+→ K0p+ B0→ K0p0 Sum rule A = -0.13 ± 0.13 ± 0.03 A = +0.14 ± 0.13 ± 0.06 HFAG AVG: -0.01 ± 0.10 P dominants. Acp(K0p+)~ 0 World Average Important topic for Super B factory Acp(K0p+)= 0.009±0.025 ATLAS sem. 29-9-2008

    43. Lepton Flavor Violation in Kaons • RK= G(K→en)/G(K→mn) = = (2.477± 0.001) x10-5 in SM Leading effect fK cancels but need radiative corrections. •SUSY LFV: How to improve: KLOE: 20% more data drel <1.3% NA62: ~120 000 more evts drel ~ 0.3% AVG: drel = 1.3% ATLAS sem. 29-9-2008

    44. Clean Decays Sensitive to NP From Mescia’s slides at FPCP08 ATLAS sem. 29-9-2008

    45. Future Search for Rare Kaon Decay • E14 at J-PARC • P326/NA62 at CERN S/B ~1.5, aim at 100 events - 2008: Detector upgrade -2009: Beam line construction -2011: Physics run detector upgrade S/B ~10, 80 events in 2 years - 2008: Detector R&D, full approval (hope!) -2009: Construction -2012: Physics run ATLAS sem. 29-9-2008

    46. one more magnitude lower Lepton Flavor Violation in t Decay • Forbidden in SM but various new physics models predict B as high as 10-8 SUSY Higgs SUSY MSSM Current B Factory reach: B~10-8 ATLAS sem. 29-9-2008

    47. HyperCP 3mm evt Search for U(1S) →g a1 0 CLEO, arXiv: 0807.1427 0 • Light CP-odd pseudoscalar Higgs, a1 • In NMSSM,an a1 less than an bb Dermisek et. al, PRD 76 051105 (2007). 0 0 • Search for a1 →mm, tt (dominant above 2Mt) • Signals peak in the Eg (gtt) Emm (gmm) dist. Constraints on NMSSM 0 B(U(1S) →ga1<2.3x10-6 0 UL as M(a1) ATLAS sem. 29-9-2008

    48. one more magnitude lower Lepton Flavor Violation in t Decay • Forbidden in SM but various new physics models predict B as high as 10-8 SUSY Higgs SUSY MSSM Current B Factory reach: B~10-8 ATLAS sem. 29-9-2008

    49. + 0.006 -0.107± 0.016 BaBar Direct CP Violation in B→Kp Decays New Update Belle Results: Nature 452, 332 (2008) { - 0.004 -0.094± 0.018 ± 0.008 Belle Acp(K+p-) = -0.086± 0.023 ± 0.009 CDF -0.04± 0.16 ± 0.02 CLEO + 0.012  -0.098 @ 8.1sAVG - 0.011 { +0.030± 0.039± 0.010BaBar Acp(K+p0) = +0.07± 0.03± 0.01 Belle -0.29± 0.23± 0.02CLEO  +0.050± 0.025 @2.0sAVG DAKp = Acp(K+p-) - Acp(K+p0)= -0.147± 0.028 @ 5.3s ATLAS sem. 29-9-2008

    50. Lb L mm EXP, SM MSSM C7geff>0 Future Prospects for AFB(q2) CDF and D0, please contribute! 5ab-1 MC study of SuperB 50 ab-1 MC study of SuperB LHCb 2fb-1 ATLAS 30 fb-1 ATLAS sem. 29-9-2008