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Plots for "Performance study of the level-1 di-muon trigger" CSC book chapter

Introduction

This page contains all plots in the CSC note "Performance study of the level-1 di-muon trigger" which forms a chapter of the CSC book "Expected Performance of the ATLAS Experiment Detector, Trigger, Physics", CERN-OPEN-2008-020, arXiv:0901.0512.

Plots

effPt.gif

Figure 1: Trigger efficiency as a function of pT with each low-pT threshold; MU0 (filled circles), MU5 (filled triangles) and MU6 (open squares) for muons with |η|<2.5 at the interaction point.



effEtaMU4.gif effEtaMU6.gif

Figure 2: The |η| dependency of the trigger efficiency for MU0 (a) and MU6 (b) trigger selections. Solid lines correspond to the simulated muons with pT=19 GeV, dotted lines are for muons with pT at threshold (in the case of MU0 this threshold is set to 4 GeV).



effPhiMU4.gif effPhiMU6.gif

Figure 3: The φ dependency of the trigger efficiency for MU0 (a) and MU6 (b) trigger selections. Solid lines correspond to the simulated muons with pT=19 GeV, dotted lines are for muons with pT at threshold (in the case of MU0 this threshold is set to 4 GeV).



dimu_eff_vs_dr.gif dimu_Reff_vs_dr.gif

Figure 4: (a) Trigger efficiency as a function of ΔR in the semi-leptonic rare B decay Bs0→μ+μ-φ using the 2MU0 (filled circles) and 2MU6 (open squares) with MuCTPI. (b) Effect of MuCTPI as a function of the opening angle, ε(without MuCTPI)/ε(with MuCTPI) for 2MU0 (filled circles) and 2MU6 (open squares).



trmu_pt.gif dimu_eff_vs_dr2.gif

Figure 5: (a) The truth pT distribution of the two leading muons is different opening angles range in Bs0→μ+μ-φ events: ΔR<0.1 (filled circles), 0.2<ΔR<0.4 (filled triangles) and ΔR>0.5 (filled squares). (b) The efficiency of 2MU0 as a function of opening angles for two cases: the ΔR separation of the two muons is either larger (filled circles) or smaller (open circles) at the muon trigger system compared to that at the primary vertex.



dimuon_mass.gif dimuon_efficiency.gif

Figure 6: (a) Scaled di-muon invariant mass-squared distribution in Bs0→μ+μ-φ events: no level-1 selection (open histogram), triggered by 2MU0 (hatched histogram) and by 2MU6(cross hatched histogram). (b) Efficiencies of 2MU0 (filled circles) and 2MU6 (open squares) as a function of di-muon invariant mass-squared. The two lines show the relative efficiency with respect to the corresponding average value for 2MU0 (solid line) and 2MU6 (dotted line).



fba_distribution.gif fba_difference.gif

Figure 7: (a) Forward-Backward asymmetry in Bs0→μ+μ-φ events: no level-1 selection (filled triangles), triggered by 2MU0 (filled circles) and by 2MU6 (open squares). (b) deviation between AFB 's with and without triggers (AFB[2MUx] - AFB[no selection]: 2MU0 (filled circles) and 2MU6 (open squares).



Tables

table1.jpg

Table 1: The level-1 trigger efficiency of various configurations. The efficiency is calculated with respect to the number of generated events (not to the number of muons) of three different physics processes. The errors are statistical only.




Major updates:
-- IoannisNomidis - 12 Feb 2009

Responsible: IoannisNomidis
Last reviewed by: Never reviewed

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif dimu_Reff_vs_dr.gif r1 manage 19.8 K 2009-02-12 - 13:37 IoannisNomidis  
GIFgif dimu_eff_vs_dr.gif r1 manage 14.1 K 2009-02-12 - 13:37 IoannisNomidis  
GIFgif dimu_eff_vs_dr2.gif r1 manage 21.4 K 2009-02-12 - 13:39 IoannisNomidis  
GIFgif dimuon_efficiency.gif r1 manage 17.5 K 2009-02-12 - 13:40 IoannisNomidis  
GIFgif dimuon_mass.gif r1 manage 27.4 K 2009-02-12 - 13:39 IoannisNomidis  
GIFgif effEtaMU4.gif r1 manage 12.9 K 2009-02-12 - 13:35 IoannisNomidis  
GIFgif effPhiMU4.gif r1 manage 10.3 K 2009-02-12 - 13:36 IoannisNomidis  
GIFgif effPhiMU6.gif r1 manage 11.1 K 2009-02-12 - 13:36 IoannisNomidis  
GIFgif fba_difference.gif r1 manage 12.2 K 2009-02-12 - 13:41 IoannisNomidis  
GIFgif fba_distribution.gif r1 manage 14.0 K 2009-02-12 - 13:40 IoannisNomidis  
JPEGjpg table1.jpg r1 manage 63.3 K 2009-02-13 - 11:33 IoannisNomidis  
GIFgif trmu_pt_vs_dr.gif r1 manage 25.6 K 2009-02-12 - 13:38 IoannisNomidis  
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Topic revision: r9 - 2010-12-06 - ElmarRitsch
 
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