SUSY Dark Matter and Colliders - whepp-9

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Statistics Study • Choose two model-points: S5 (m 0 = 100, m 1/2 = 300, A 0 = 300, tan β = 2.1, µ > 0) and O1 (m˜l = 177, m 1/2 = 306, A˜q = 137, m˜q = 0, A˜l = 306, tan β = 10, µ > 0) • Find cuts to measure “signal” endpoints • Estimate expected accuracy of ATLAS measurement: 100 fb −1 • Perform χ 2 fits of sparticle masses to expected positions of edges expected from an ensemble of experiments • Interpret results as statistics of measurement on sparticle masses SUSY Dark Matter and Colliders B.C. Allanach – p.49/53
Cuts Example We use ATLFAST2.16, HERWIG6.0, ISAWIG and ISAJET7.42. Assume 100 fb −1 of LHC data. • |η j | ≤ 5, p j T ≥ 15 GeV • p e T ≥ 5, pµ T ≥ 6, |η l| ≤ 2.5 • l isolation: 10 GeV in ∆R = 0.2, ∆R(lj) ≥ 0.4. eg for m ll : • 2 OSSF leptons, p l 1 T ≥ p l 2 T ≥ 10 GeV. • n jets ≥ 2, p j 1 T ≥ pj 2 T ≥ 150 GeV, /p T > 300 GeV OSSF-OSDF subtracts well the Standard Model background. SUSY Dark Matter and Colliders B.C. Allanach – p.50/53
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SUSY Dark Matter and Colliders by B
Page 3 and 4:
The Supersymmetric Standard Model S
Page 5 and 6:
Broken Symmetry 3 components of the
Page 7 and 8:
WMAP Results SUSY Dark Matter and C
Page 9 and 10:
SUSY Prediction of Ωh 2 • Assume
Page 11 and 12: Universality Reduces number of SUSY
Page 13 and 14: Constraints on SUSY Models mSUGRA w
Page 15 and 16: Markov-Chain Monte Carlo Markov cha
Page 17 and 18: Convergence We run 9×1 000 000 poi
Page 19 and 20: Annihilation Mechanism Define stau
Page 21 and 22: 0.0015 0.03 0.08 L/GeV 0.001 0.0005
Page 23 and 24: LHC (ATLAS) SUSY Dark Matter and Co
Page 25 and 26: Collider SUSY Dark Matter Productio
Page 27 and 28: Coannihilation Slope annihilation (
Page 29 and 30: Coannihilation Theory Uncertainties
Page 31 and 32: Iterative Procedure What change in
Page 33 and 34: mSUGRA Coannihilation Uncertainties
Page 35 and 36: PmSUGRA Coannihilation a(tanβ, µ)
Page 37 and 38: PmSUGRA Dependencies ∆M (GeV) 10
Page 39 and 40: PmSUGRA Dependencies ∆M (GeV) 10
Page 41 and 42: Summary • Markov chains bring out
Page 43 and 44: Likelihood L ≡ p(d|m) is pdf of r
Page 45 and 46: Funnel Slope GeV 1400 1200 1000 800
Page 47 and 48: Funnel Theory Uncertainties Ωh 2 0
Page 49 and 50: Funnel Accuracies SM inputs and tan
Page 51 and 52: Focus Point Slope mass (GeV) 1000 9
Page 53 and 54: Focus mSUGRA Accuracies a 0.0003 0.
Page 55 and 56: LHC SUSY Measurements q l + l −
Page 57 and 58: Edge Positions endpoint S5 fit O1 f
Page 59 and 60: Fitting to SUSY Breaking Model m 1/
Page 61: Other Observables Often more compli
Page 65 and 66: Focus Point Figure 0: Focus point r
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