Measuring supersymmetry

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HAL Id: tel-00444508

https://tel.archives-ouvertes.fr/tel-00444508

Submitted on 6 Jan 2010

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Measuring supersymmetry

D. Zerwas

To cite this version:

D. Zerwas. Measuring supersymmetry. High Energy Physics - Experiment [hep-ex]. Université Paris Sud - Paris XI, 2009. �tel-00444508�

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10-6 10-5 10-4 10-3 10-2 10-1 1 100 102 104 106 108 110 112 114 116 118 120 m_H(GeV/c2) CL s 114.4 115.3 LEP Observed Expected for background 1 10 100 110 120 130 140 150 160 170 180 190 200 1 10 mH(GeV/c2) 95% CL Limit/SM

Tevatron Run II Preliminary, L=0.9-4.2 fb-1

Expected Observed

±1σ Expected

±2σ Expected

LEP Exclusion Tevatron Exclusion

SM

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0 1 2 3 4 5 6 100 30 300 m_H [GeV] ∆χ 2 Excluded Preliminary ∆α_had = ∆α(5) 0.02758±0.00035 0.02749±0.00012

incl. low Q2_data

Theory uncertainty August 2009 mLimit = 157 GeV

80.3 80.4 80.5 150 175 200 m_H [GeV] 114 300 1000 m_t [GeV] mW [ GeV ] 68% CL ∆α LEP1 and SLD

LEP2 and Tevatron (prel.)

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1 10 0 20 40 60 80 100 120 140 1 10 m_h (GeV/c2) tan β Excluded by LEP Theoretically Inaccessible m_h-max (b)

Gluino Mass (GeV)

0 100 200 300 400 500 600

Squark Mass (GeV)

0 100 200 300 400 500 600 -1 DØ, L=2.1 fb <0 µ =0, 0 =3, A β tan UA1 UA2 LEP CDF IB DØ IA DØ IB DØ II no mSUGRA solution ± χ∼ LEP2 ± l~ LEP2

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2 4 6 8 10 12 14 16 18 Log10(Q/1 GeV) 0 10 20 30 40 50 60 α−1 α₁−1 α₂−1 α₃−1

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0 100 200 300 400 500 600 700 800 m [GeV] ˜ lR ˜ lL ˜ νl ˜ τ1 ˜ τ2 ˜ χ0 1 ˜ χ0 2 ˜ χ0 3 ˜ χ0 4 ˜ χ± 1 ˜ χ± 2 ˜ uL, ˜dR ˜ uR, ˜dL ˜ g ˜ t1 ˜ t2 ˜ b1 ˜ b2 h0 H0 , A0 H±

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ADC [counts] 0 2 4 6 8 10 12 14 16 18 20 22 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 ATLAS Time [ns] 0 50 100 150 200 250 ADC [counts] 500 1000 1500 2000 2500 3000 3500 ATLAS

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Slope [counts/mV] 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 0 1000 2000 3000 4000 5000 6000 ATLAS channel 0 20 40 60 80 100 120 140 160 ADC 500 1000 1500 2000 2500 3000 3500 4000 ATLAS

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(GeV) T p 0 5 10 15 20 25 30 Efficiency 0 0.2 0.4 0.6 0.8 1 All Stand-alone Combined (GeV) truth E 2 10 ₁₀3 truth /E jet E 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 < 0.4  η  EM scale, 0.2 < < 2.6  η  EM scale, 2.4 < < 0.4  η  R=0.7, 0.2 < ∆ Global calibration, < 2.6  η  R=0.7, 2.4 < ∆ Global calibration,

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(GeV) T E Σ 0 200 400 600 800 1000 1200 1400 16001800 2000 Resolution (GeV) 0 5 10 15 20 25 30 35 40 QCD Jets SUSY tt τ τ → A

of leading jet (GeV)

T E 10 ₁₀2 ₁₀3 ) -1 (GeV_T dN / dE -1 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 10 10 10 11 10

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(GeV) T E 0 20 40 60 80 100 120 140 160 180 200 Efficiency 0 0.2 0.4 0.6 0.8 1

Tight cuts (physics events) Medium

Loose

Tight cuts (single electrons) Medium Loose ATLAS (GeV) γ γ m 90 95 100 105 110 115 120 125 130 135 140 Arbitrary units 0 100 200 300 400 500 600 700 0.02) GeV ± Mean = (119.8 0.02) GeV ± = (1.39 σ ATLAS

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σ(pp→H+X) [pb] √s = 14 TeV Mt = 174 GeV CTEQ6M gg→H qq→Hqq qq_’→HW qq_→HZ gg,qq_→Htt_ MH [GeV] 0 200 400 600 800 1000 10-4 10-3 10-2 10-1 1 10 102 0 200 400 600 800 1000 BR(H) bb_ τ+_τ− cc_ gg WW ZZ tt-γγ Zγ MH [GeV] 50 100 200 500 1000 10-3 10-2 10-1 1 102 103

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10-2 10-1 1 10 102 103 100 150 200 250 300 350 400 450 500 χ˜2o_χ˜1+ t˜1−t˜1 q˜q˜− g˜g˜ ν˜ν˜− χ˜2og˜ χ˜2oq˜ NLO LO √S = 14 TeV m [GeV] σtot[pb]: pp → g˜g˜, q˜q˜ − , t˜1t˜ − 1, χ˜2oχ˜1+, ν˜ν˜ − , χ˜2og˜, χ˜2oq˜ Prospino2 (T Plehn)

Effective Mass [GeV] 500 1000 1500 2000 2500 3000 -1 events / 200 GeV / 1fb -1 10 1 10 2 10 3 10 SU1 SU2 SU3 SU4 SU6 SU8.1 SM BG ATLAS

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1000 100000 1e+07 m₀ m1/2 0 200 400 600 800 1000 0 200 400 600 800 1000 10 1000 100000 1e+07 m₀ m1/2 0 200 400 600 800 1000 0 200 400 600 800 1000

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0 1e-07 2e-07 3e-07 4e-07 5e-07 6e-07 0 200 400 600 800 1000 1/ χ 2 M1 0 0.001 0.002 0.003 0.004 0.005 0.006 0 200 400 600 800 1000 1/ χ 2 M1

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log Q 4 6 8 10 12 14 16 1/M 0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 Gaugino masses 1/M1 1/M2 1/M3 log Q 4 6 8 10 12 14 16 1/M 0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 Gaugino masses 1/M1 1/M2 1/M3 log Q 4 6 8 10 12 14 16 M 0 50 100 150 200 250 300 350 400 450 500 Sfermion masses selectron and smuon L selectron and smuon R u and d squarks L u and d squarks R log Q 4 6 8 10 12 14 M 100 200 300 400 500 600 700 Sfermion masses selectron and smuon L selectron and smuon R u and d squarks L u and d squarks R

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HWW Htt -1 0 1 2 3 -5 -3 -1 1 3 HWW Htt -1 0 1 2 3 -5 -3 -1 1 3

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HWW Htt -1 0 1 2 3 -5 -3 -1 1 3 HWW Hbb -1 0 1 2 3 -5 -3 -1 1 3

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HWW Hbb -1 0 1 2 3 -5 -3 -1 1 3 HWW Hbb -1 0 1 2 3 -5 -3 -1 1 3 HWW Hbb -1 0 1 2 3 -5 -3 -1 1 3

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log Q 4 6 8 10 12 14 16 1/M 0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 Gaugino masses 1/M1 1/M2 1/M3 log Q 4 6 8 10 12 14 16 M 0 100 200 300 400 500 600 700 Sfermion masses selectron and smuon L selectron and smuon R u and d squarks L u and d squarks R

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