1. RECENT RESULTS FROM THE TEVATRON AND LHC Suyong Choi Korea University

2. Contents The experiments Physics Results Heavy flavor Higgs Searches SUSY Searches Exotica Summary and Outlook 2

3. The Tevatron (1983 – 2011) D-ZeroExperimentD-ZeroExperiment CDFExperimentCDFExperiment 3

4. 4

5. 5 >90% data taking efficiency Recorded up to 130 pb -1 per day >90% data taking efficiency Recorded up to 130 pb -1 per day

6. Measurement of Electroweak Cross Sections 6

7. 7

8. Using full data of 9.7 fb-1 Neural network technique 8

9. 2011 data of 1 fb -1 Boosted decision tree technique 9

10. 10

11. 11 Γ = 0.6580 ± 0.0054(stat.)± 0.0066(syst.) ΔΓ = 0.116 ± 0.018(stat.) ± 0.006(syst.)  s = -0.002 ± 0.083(stat.) ± 0.027(syst.)

12. TOP PHYSICS 12

13. Top Pair Production Tevatron - 7.5 pb 7 TeV LHC - 160 pb 13

14. Single Top Production Tevatron – 3.6 pb 7 TeV LHC – 86 pb 14

15. 15

16. Physics with Top 16

17. Tevatron Top Quark Mass Combination 17 0.9 GeV uncertainty!

18. Top Quark Mass at LHC muon+jets channel with 2 b-jet tagged jets 2391 events selected, 92% purity Simultaneous determination of m t,reco and JES. Likelihood fit to extract m t Systematics dominated 18 CMS-PAS-TOP-11-015

19. Determination of Top Quark Width 19

20. 20

21. 21

22. 2 sigma deviation Consistent asymmetry for different charged lepton samples 22

23. 23

24. 24

25. Asymmetry seen already in lepton rapidity 25

26. D-Zero 2 sigma deviation No statistically significant enhancement seen dividing into subsamples 26

27. Charge asymmetry at LHC 27

28. Top Quark Spin Correlation Top quark decays before hadronization Spin information reflected in direction of decay products On average, no preferred spin polarization But, event-by-event, there is correlation in polarization Lepton is the most sensitive probe of top quark spin polarization ATLAS spin correlation analysis 28

29. ATLAS Observation D-Zero Evidence for Spin correlation 29

30. HIGGS SEARCHES 30

31. CMS Higgs Search Channels Some updated and new channels w.r.t. last year 31

32. Events separated into 5 classes according to MVA output Photon quality Background modeling: polynomial fit, sideband method 32 CMS-PAS-HIG-12-001

33. Consistency P-value - Probability for background to produce fluctuation as large as observed 33 2.9  @125 GeV 1.6  global significance

34. 34 Data excludes Higgs in @ 95% CL 110.0 – 111.0 117.5 – 120.5 128.5 – 132.0 139.0 – 140.0 146.0 – 147.0

35. 35

36. CMS Combined Higgs Exclusion Limits Observed limit @ 95 CL: 127.5 – 600 GeV 36 CMS-PAS-HIG-12-008

37. ATLAS Combined Higgs Exclusion 37 Excluded regions: 110 – 117.5 118.5 – 122.5 129 – 539

38. SUSY Higgs Searches 38 One of many categories

39. SUSY SEARCHES 39

40. SUSY Searches at CMS Full 2011 data explored Many final states and techniques Single lepton + jets +MET Opposite sign dilepton Same sign dilepton Etc. Interpretation in simplified model spectra Described in J. Alwall, et. Al., PRD 79 075020, 2009 40

41. Simplified Model Topologies Direct decays Assume sufficient mass splitting between particles 41

42. Simplified Model Topologies 1 or 2 Cascade decays Mass of intermediate particle 42

43. Simplified Model Topologies Chargino neutralino 43

44. 44

45. Mass ranges probed 45

46. EXOTICA 46

47. 47 CMS-EXO-11-024

48. Search for Dilepton Resonances Probe masses of up to 2 TeV Z’ SSM > 2.32 TeV KK graviton (k/M Pl =0.1) > 2.135 TeV 48 CMS-EXO-11-019

49. Search for Extra Dimensions in Diphoton Channel 49 Phys. Rev. Lett. 108, 111801 (2012)

50. Search for Dijet Resonances 50 CMS-EXO-11-026

51. Search 4 th generation t’ quark 51 CMS-EXO-11-099

52. Summary and Outlook 2011 was a great year for CMS Successful operation, calibration, comprehensive studies High-statistics top quark samples Allowed mass range for SM Higgs narrowed significantly Probed TeV mass ranges 8 TeV center-of-mass energy with more luminosity in 2012 More precision measurements Kinematic reach in searches extended Definite answer regarding Higgs searches 52

53. 53 >90% data taking efficiency Recorded up to 230 pb -1 per day >90% data taking efficiency Recorded up to 230 pb -1 per day Results from 2012 data will be shown in Summer Conferences

54. BACKUP 54

55. D-Zero 55

56. D-Zero Detector Silicon microstrip track er Central fiber tracker 2 T solenoid field Liquid Argon Calo. Good resolution, e/h 3 layer muon system Toroidal magnetic field Top event candidate 56

57. CMS 검출기 57

58. Rediscovery of known particles 58 Courtesy of Jim Pivarski Well-understood detector, trigger and software performances

59. CLs Confidence level for signal hypothesis 59

60. p-value 60