1 / 80

Particle Physics 2008

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

kalani
Download Presentation

Particle Physics 2008

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related