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Delayed Photon Analysis in Gamma and MET Events

This presentation outlines the analysis of delayed photon data in gamma and missing transverse energy (MET) events. It details the dataset creation using the TStnDataset framework and explores various data selection criteria for identifying events with good electron tracks. Additional points of focus include trigger validation, timing analysis, and evaluating the promotion effect in the context of the W→eν sample. The findings aim to organize insights for further discussions and insights at Texas A&M.

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Delayed Photon Analysis in Gamma and MET Events

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  1. Delayed Photon AnalysisGamma + MET Jonathan Asaadi, Adam Aurisano, Dave Toback Note: This is to just orgainize my thoughts and results and will be edited when we go to give this talk Jonathan Asaadi Texas A&M

  2. Point 1 • Point 2 • Point 3 • Conclusion • Next Steps Outline of Talk Jonathan Asaadi Texas A&M

  3. 560 pb-1 Data TStnDataset* dataset0 = new TStnDataset("cdfpstn","bhelbh",190851,203799); TStnDataset* dataset1 = new TStnDataset("cdfpstn","bhelbi",203819,206989); Data Sample used by Paul (and me) to identify 560 pb-1 wele->setSelectChoice(TWeleAnaModule::SelEle); TStnElectron* ele = wmassele.size() > 0 ? wmassele[0] : NULL; intitrack = ele != NULL ? ele->TrackNumber() : -1; TStnTrack* eleTrack = itrack > -1 ? fTrackBlock->Track(ele->TrackNumber()) : NULL; TrackArrayextracks; if(eleTrack && _selectChoice == SelEle ) extracks.push_back(eleTrack); clusterTracks(&extracks); float eleT0 = wmassele.size() > 0 ? FindGoodHit(wmassele[0], fElectronBlock, fCalDataBlock) : 0.; float xxx[3] = {0.,eleT0,0.}; ClusterVector clusters; _clmod.orderBySumPWeights(); for(inti = 0; i < _clmod.clusters()->size(); i++) { ClusterCl3d* cl = _clmod.cluster(i); if(cl->nPoints() < 3) continue; clusters.push_back(cl); } Confirmation of data samples Selects events with good electron tracks coming from W’s as identified in STNtupling Jonathan Asaadi Texas A&M

  4. Triggers TTl3d* tl3d = fTriggerBlock->Tl3d(); Int_t nl3 = _fTrigTable->NL3Triggers(); bool trpassed = false; const TStnTrigger* trig = NULL; for(int i=0; i< nl3; i++) { trig = _fTrigTable->GetTrigger(3,i); if (tl3d->PathPassed(i)) { //trig->Print("banner"); //trig->Print("data"); std::string trign = trig->GetName(); //int ipos = trign.find("EXPRESS_MET_PEM"); //int ipos = trign.find("MET35_&_CJET_&_JET"); //int ipos = trign.find("PLUG_ELECTRON_20"); //int ipos = trign.find("MET_PEM"); int ipos = trign.find("PHOTON_25"); //int ipos = trign.find("Z_NOTRACK"); //int jpos = trign.find("ELECTRON70"); //int mpos = trign.find("W_NOTRACK"); int npos = trign.find("SUPER_PHOTON70"); if( ipos == 0 || npos == 0){ trpassed = true; break; } } } Used for Photons PHOTON_## Trigger ???...need to find reference W-> e nu no Track L1 single CEM or PEM tower L2 CEM or PEM cluster > 25 GeV MET > 15 GeV Isolation < 2 GeV L3 z=0 Confirm L2 Objects Used for Electron sample Jonathan Asaadi Texas A&M

  5. Right Vertex Wrong Vertex W-> e nu sample w/ Wnotrack trigger Timing Jonathan Asaadi Texas A&M

  6. hmmm….. Beam Halo Cosmics after PMT spike rejection and rebinned Cosmics Jonathan Asaadi Texas A&M

  7. Is everything working plots Run # vs. Calo t RMS Run # vs. Calo t mean Run # vs. Vertex z Mean Run # vs Vertex RMS

  8. Is everything working plots RMS CorrectedTime vs. Run # Mean CorrectedTime vs. Run #

  9. Is everything working plots Mean Track Time Track Phi Mean Track Z Mean Track Z vs Mean Track T (corrected) slope: -0.072 ns/cm & y intercept: -0.0041 Mean Track Time Mean Track T vs Mean phi (uncorrected) Track Eta Mean Track Time Mean Track T vs Mean eta (uncorrected)

  10. Is everything working plots Mean Track Z Track Eta Track Phi Mean Track Time

  11. Promotion Effect Study z = CES Energy Read Out = E Distance of CES = 181.15 cm L z = 0 z = Vertex Jonathan Asaadi Texas A&M

  12. Promotion Effect Study Baseline Electron Cuts used in STNtuple for our W->e nu sample from data that I am looking for the promotion effect in

  13. Promotion Effect Study No Additonal cuts used above the baseline cuts Right vertex defined as Track Z and Vertex Z within 2 cm and Track time and Vertex Timing < 2 ns and wrong vertex failing either of these cuts Event Readout Et CDF STNtuple Et Et Calculated

  14. Promotion Effect Study Adding a cut requiring the Et > 45 GeV STNtuple Corrected Et corrected time corrected time

  15. Promotion Effect Study Adding a cut requiring the Et > 45 GeV Calculated Et

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