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


This page contains all plots in the CSC note "Production Cross-Section Measurements and Study of the Properties of the Exclusive B+→J/Ψ K+ Channel" which forms a chapter of the CSC book "Expected Performance of the ATLAS Experiment Detector, Trigger, Physics", CERN-OPEN-2008-020, arXiv:0901.0512.



Figure 1: J/ψ invariant mass distribution with a Gaussian fit superimposed.


Figure 2: Invariant mass M(K+ μ+μ)- distribution with the B+ mass peak for signal (red) and combinatorial b - bbar background (blue).


Figure 3: B+ mass fit with the both signal (red) and background (blue) contributions shown separately.

B+_mass_staco_10_18.gif B+_mass_staco_18_26.gif

(a) 10<=pT<18 GeV (b) 18<=pT<26 GeV

B+_mass_staco_26_34.gif B+_mass_staco_34_42.gif

(c) 26<=pT<34 GeV (d) 34<=pT<42 GeV.

Figure 4: Fit of the B+ mass in various pT ranges.

Bplus_proper_time.gif bbBtimeResolution_paper.gif

Figure 5. B+ lifetime fit (left) with the signal (dashed red) and the background (dashed black) contributions shown separately and B+ lifetime resolution (right).



Table 1: Monte Carlo data set used for the B+ study. The Ngen(B+-> J/ψ K+) events are the ones contained in the whole generated sample.


Table 2: J/ψ reconstruction efficiencies with and without λ cut.


Table 3: Efficiency A and B+ mass width σ(B+) for the various pT bins.


Table 4: Overall efficiency and B+ mass width for all B+ with pT>10 GeV.


Table 5: Results for the lifetime fit


Table 6: Statistical and total uncertainties for the B+ -> J/ψ K+ differential and total cross-section measurements for an integrated luminosity of 0.01 fb-1. Total uncertainties include luminosity and BR systematic uncertainties.

Major updates:
-- IoannisNomidis - 27 Mar 2009

Responsible: IoannisNomidis
Last reviewed by: Never reviewed

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif B+_mass_staco.gif r1 manage 17.1 K 2009-03-28 - 10:48 IoannisNomidis  
GIFgif B+_mass_staco_10_18.gif r1 manage 18.2 K 2009-03-28 - 10:51 IoannisNomidis  
GIFgif B+_mass_staco_18_26.gif r1 manage 17.9 K 2009-03-28 - 10:51 IoannisNomidis  
GIFgif B+_mass_staco_26_34.gif r1 manage 18.3 K 2009-03-28 - 10:51 IoannisNomidis  
GIFgif B+_mass_staco_34_42.gif r1 manage 19.0 K 2009-03-28 - 10:52 IoannisNomidis  
GIFgif Bplus_proper_time.gif r1 manage 17.9 K 2009-03-31 - 14:53 IoannisNomidis  
GIFgif bbBtimeResolution_paper.gif r1 manage 13.0 K 2009-03-31 - 14:54 IoannisNomidis  
GIFgif jpsi_mass.gif r1 manage 12.5 K 2009-04-24 - 16:48 IoannisNomidis  
GIFgif overlay+bkg.gif r1 manage 7.9 K 2009-03-28 - 10:43 IoannisNomidis  
JPEGjpeg t1.jpeg r1 manage 9.0 K 2009-04-24 - 17:21 IoannisNomidis  
JPEGjpeg t2.jpeg r1 manage 25.6 K 2009-04-24 - 17:21 IoannisNomidis  
JPEGjpeg t3.jpeg r1 manage 16.0 K 2009-04-24 - 17:23 IoannisNomidis  
JPEGjpeg t4.jpeg r1 manage 6.5 K 2009-04-24 - 17:23 IoannisNomidis  
JPEGjpeg t5.jpeg r1 manage 9.5 K 2009-04-24 - 17:23 IoannisNomidis  
JPEGjpeg t6.jpeg r1 manage 15.9 K 2009-04-24 - 17:24 IoannisNomidis  
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Topic revision: r8 - 2010-12-06 - ElmarRitsch
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