Pre-embedding QA for W Analysis

Motivation:  Verify compatibility of MC signal W events with real background events (zerobias) before embedding begins. 

Things to check for TPC (in both high and low HV):

• dE/dx
• chi^2 / dof

Details of BFC

• MC : Pythia QCD sample with partonic pT > 20 GeV.  Using new TpcRS simulator in CVS bfc.C(100,"MakeEvent,ITTF,NoSsdIt,NoSvtIt,Idst,VFPPVnoCTB,logger,-EventQA,-dstout,tags,Tree,EvOut,analysis,dEdxY2,IdTruth,useInTracker,-hitfilt,tpcDB,TpcHitMover,TpxClu,McAna,fzin,y2009,tpcrs,sdt20090428.141700,geant,geantout,beamLine,eemcDb,McEvOut,bigbig,emcY2,EEfs,bbcSim,ctf,CMuDST","/star/data05/scratch/balewski/TpcRS-rev2/test_QCDprod.fzd")
• Data: SL09b production of L2W stream events from Run 9 pp500

  bfc.C(200,"DbV20090817 pp2009a ITTF BEmcChkStat QAalltrigs btofDat
  Corr3 OSpaceZ2 OGridLeak3D beamLine -VFMinuit VFPPVnoCTB -
  dstout","st_W_10087028_raw_4180001.daq")

Track Selection:

• Select vertices with rank > 0 and |zVertex| < 100
• Look at global component of primary tracks associated with each vertex that passed the above condition
• Require global track flag == 101, pT > 150 MeV and nHitsFit/nHitsPoss >= .51

For reference Jan did a similar study in June with old TPC simulator.

Data:

Figure 1:  TPC HV at "higher" setting (R10086140-R10092114)

Figure 2: TPC HV at "low" setting (R10096139-R10101020)

MC:

Figure 3:  TPC HV at "higher" setting (ie. dbMk->SetDateTime(20090331,0)  used in bfc )

Figure 4:  TPC HV at "lower" setting (ie. dbMk->SetDateTime(20090410,11832)  used in bfc )