History of W embedding

1) Embedding request

The embedding request (Jan's blog)

was approved by spin PWG and Jim made the official request

2) Best guess of BFC options

-------------- Jan , hard pp , no pipelup

root4star -q -b 'bfc.C(5,"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","../TpcRS-rev2/test_QCDprod.fzd")' >&LogN

----------- Jan add pileup of 1%

root4star -q -b 'bfc.C(5,"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","../TpcRS-rev2/test_QCDprod.fzd; gfile B ../TpcRS-rev2/test_QCDminb.fzd; mode BTOF back 1; mode TPCE back 3761376; gback 470 470 0.01 106. 1.5; rndm 10 1200")' >&LogP2

-----------
For the real data, this is the chain we used for the official production:
bfc.C(200,"DbV20090817 pp2009a ITTF BEmcChkStat QAalltrigs btofDat Corr3 OSpaceZ2 OGridLeak3D beamLine -VFMinuit VFPPVnoCTB -dstout","st_W_10087028_raw_4180001.daq")

3) pre-embedding data vs. M-C comparison

• Justin compared TPC - looks tragic Nov 10
• Ilya - BTOW SF for MC - has some eta dependence - Nov 10 fig 4a black curve

4) Optimal GSTAR+BFC settings for W-embedding, simulations

(aimed toward best achievable compatibility with pp500 data)

a) Pythia tune ??

b) GSTAR , output : .fzd

compute geantDE->ADC w/
mSF[0,1,2] = {1/0.07,0,0}
in StEmcSimpleSimulator.cxx | compute geantDE->ADC
w/ SF=0.05 ? (as is) | geantDE stored in muDst
(no atm pressure dependence)

*) Note, for the real sub-event the embedding will copy 1:1 its content to the output muDst

c) BFC_mixer, 2 input sub-events (.daq , .fzd), 1 output event (muDst + geant.root)
c1) M-C sub-event, before mixing

ADC->ET | TpcRS ADC*2.6
see Justin's study| dbFlavor=Wbose3
ideal*slopes*E/P| dbFlavor=ofl
final pp500 gains|force 5GeV electron at eta=0.5
results w/ ADC=500 | force 5GeV muon at eta=0.5
results w/ ADC=30 |