Difference: CutStudies (15 vs. 16)

Revision 162011-03-17 - AbdullaAbdulsalam

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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

/castor/cern.ch/cms/store/caf/user/tdahms/HeavyIons/Onia/Data2010/v4/Skims/Prompt/150256-150619/
/castor/cern.ch/cms/store/caf/user/tdahms/HeavyIons/Onia/Data2010/v4/Skims/Prompt/150844-153368/

The outfiles are

/castor/cern.ch/user/p/pshukla/HIdata/JpsiCutData1
/castor/cern.ch/user/p/pshukla/HIdata/JpsiCutData2

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

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  • 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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