Plan of Teaching

1. Road Map (e+e- final pair spectra from NN, NA, AA -> e+e-X reactions)
2. PID standard cuts e+/e- reconstruction algortithm (HPidAlgStandCuts)
   • Algorithm description
   • Input parameters (HPidAlgStandCutsPar) - description
   • How to run PID with HPidAlgStandCuts in HYDRA framework
     • Input (HPidTrackCand data category, input parameters HPidAlgStandCutsPar)
     • Output (HPidParticle data category, control PID ntuple)
   • Exercises (HPidAlgStandCutsPar paramter container)
     • Initialise HPidAlgStandCutsPar parameter container from ORACLE and store it in ROOT file (runID=7006)
     • Draw parameter histograms stored in HPidAlgStandCutsPar
   • Exercises (control PID ntuple with C+C@2GeV events)
     • Make q*p vs. cut number plots
       
     • Determine purity and efficiency of e+/e- standard cuts reconstruction algorithm
3. Dielectron (e+e- pair) reconstruction (NN, NA, AA -> e+e-X)
   • Dielectron signal and combinatorial background (CB) reconstruction
   • CB reduction strategy definition of direct and recursive cuts
   • How to run e+e- pair analysis in the HYDRA framework
     • HPairFiller and HPairFilter reconstructor classes
     • Input parameters (HPairCutPar) - description
     • Output (HPair data category, control HPairFilter ntuple)
   • Exercises (HTree with HPair category with C+C@1AGeV events)
     • Draw HPair data members using TBrowser
   • Exercises (control HPairFilter ntuple with C+C@1GeV events)
     • Draw invariant mass, opening angle, transverse momentum and rapidity plots for unlike-sign and like-sign pairs
     • Draw invariant mass spactra for unlike-sign and like-sign pairs as the function of direct and recursive cuts
     • Calculate dielectron signal S = N(e-e+)-CB (CB = N(e+e+)+N(e-e-)) after recursive cuts

RoadMap

PID-PidAlgStandCuts

Dielectrons