Difference: CutStudies (15 vs. 16)

Revision 162011-03-17 - AbdullaAbdulsalam

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META TOPICPARENT name="AbdullaAbdulsalam"

JPsi Cut Studies using MC and real HI data

MC-Jpsi embedded in MB HI data

we studied efficiency for siganls in various cut values and we get 98% in new rapidity bins, (0,1.2), (1.2, 1.6), (1.6, 2.4)

Data-Tuning the cuts for Jpsi

Run on data


The outfiles are


We studued efficiency for signals and for rejection of Background in various cut values and tried to tune the cuts by plotting S/BG ratio plots.

We chose the following cuts for Jpsi.

mu_innerTrackHits > 10
mu_pixeLayers > 0
mu_innerTrack_chi2NDOF < 2.0
mu_dxy < 0.1 cm
mu_dz < 15. cm
mu_globalTrack_chi2NDOF < 20
mu_validMuHits > 0
vProb > 0.01

The study with MC, Data and S/BG plots with these cuts are attached.

  • JPsiLat.pdf: Documentation for Cut Studies For JPsi using MC and data

* JPsiLat_M3.pdf: update of document for JPsi cut studies



  • SBG.pdf: It is signal to background ratio plots for data, with cuts that we chose.

  • JPsiDataCutTree.pdf: Jpsi cut studies with data for signal extraction and background rejection efficiencies. The study meant for tuning the cuts for Jpsi and presented at dilepton meeting on Feb-1.

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  • JPsi_MC_CutTree.pdf: This is Jpsi cut studies with MC for signal extraction efficiency in rapidity bins [(0, 1.2), (1.2, 1.6), (1.6, 2.4)].

* JPsiCut_M7.pdf: update of JPsi cut studies


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