Early Physics results from LHC

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EM Shower Energy Scale … Results from first 1 million π 0 γγ E T (cluster)>0.4 GeV, p T (γγ)>0.9 GeV ± 2% ϕ 17 η Uniformity of EM calorimeter response: from π 0 EM energy scale known to better than 2% over full η range, uniformity in ϕ
Missing transverse energy in the calorimeters Sensitive to calorimeter performance (noise, coherent noise, dead cells, mis-calibrations, cracks, etc.), and cosmics and beam-related backgrounds Calibrated E miss T from minimum-bias events Measured over ~ full calorimeter coverage (360 0 in φ, |η| < 4.5, ~ 200k cells) E T miss spectrum from SUSY searches: events with ≥ 3 high-p T jets, p T (j1) > 70 GeV Calibrated SUSYx10 (m~400 GeV) jeudi 25 novembre 2010
Page 1 and 2: Early Physics results from LHC 1 Lu
Page 3 and 4: Physics @ LHC The Standard Model ha
Page 5 and 6: Some of the physicists’ jargon 3
Page 7 and 8: Some of the physicists’ jargon
Page 9 and 10: Some of the physicists’ jargon
Page 11 and 12: Signal vs background(s) • Signal:
Page 17 and 18: Measurements vs predictions Predict
Page 25 and 26: Simulation example 6 jeudi 25 novem
Page 27 and 28: jeudi 25 novembre 2010 Detector com
Page 29 and 30: Detector commissioning Understandin
Page 31 and 32: The ATLAS/CMS detectors at LHC σ/p
Page 33 and 34: The ATLAS/CMS detectors at LHC 116
Page 35 and 36: The ATLAS/CMS detectors at LHC σ/p
Page 37 and 38: Evolution of the Cross-Sections Inc
Page 39 and 40: Physics Objects The CMS detectors a
Page 41: ECAL energy scale in the barrel the
Page 45 and 46: M,'%&,H,D05.-3. #$%&'()%*'+,(-+).*
Page 47 and 48: W transverse mass • e or µ with
Page 49 and 50: Z mass peaks • Invariant mass of
Page 51 and 52: Missing transverse energy • E T m
Page 53 and 54: First W → µν events in CMS, Apr
Page 55 and 56: Z → µ + µ − event in CMS q Z
Page 57 and 58: Electroweak: Z & W cross sections Z
Page 59 and 60: W and Z cross section with e and µ
Page 61 and 62: Study of the top quark: one of the
Page 63 and 64: LHC is a tt factory Total productio
Page 65 and 66: Lepton+Jets loose selection • Tri
Page 67 and 68: e+Jets candidate event on July 18 E
Page 69 and 70: eμ candidate DL2 p T (tracks) > 1
Page 71 and 72: The “golden” µµ+jets candidat
Page 73 and 74: µµ +Jets Candidate … cont’d M
Page 75 and 76: µµ +Jets Candidate … cont’d M
Page 77 and 78: Measurement of top cross section
Page 79 and 80: Top Full selection applied: Z-Veto,
Page 81 and 82: • m µµ 94 GeV, E T miss = 161 G
Page 83 and 84: First CMS ZZ4µ Event 56 jeudi 25 n
Page 85 and 86: Backup 58 jeudi 25 novembre 2010
Page 87 and 88: Jets • Measurement of inclusive j
Page 89 and 90: Inclusive jets • Combine a range
Page 91 and 92: Dijets and multi jets • Leading j
Page 93 and 94:
8-jet event 8 jets with p T >60 GeV
Page 95 and 96:
Possible early discovery: anomalies
Page 97 and 98:
Possible early discovery: anomalies
Page 99 and 100:
Jets and Missing E T The highest ma
Page 101 and 102:
Jets Event with 6 jets with p T in
Page 103 and 104:
Observed event with hardest jet p T
Page 105 and 106:
p T (j 1 )=420 GeV p T (j 2 )=320 G
Page 107 and 108:
!"" #$%$&'()'*+',-(./0&$()' >-K$@L
Page 109 and 110:
Inclusive jet cross-section p T j >
Page 111 and 112:
Cross check of 3-jet mass • Invar
Page 113:
Dilepton events • Count events wi
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Early Physics results from LHC

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