cal - or - shower shape analysis
DESCRIPTION
CAL - or - Shower Shape Analysis. This is the 3 rd of the three pieces. The data use for this require the CPF PreFilters CPFGamProb > 0 Pass 5 PreFilters Accepted as is Attempt to limit CAL Back & Side entering Events. Kill Events coming in the backside. - PowerPoint PPT PresentationTRANSCRIPT
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CAL CAL - or -- or - Shower Shape Analysis Shower Shape Analysis
Kill Events coming in the backside
Kill Events coming in the CAL Sides
3 PreFilters / CTs one each forVTX, 1Tkr, and nTkr topologies
This is the 3rd of the three pieces. The data use for this require the CPF PreFilters CPFGamProb > 0Pass 5 PreFilters Accepted as isAttempt to limit CAL Back & Side entering Events
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Backside Entering FilterBackside Entering Filter
Pick up signal in last layers of CAL.Cross correlate Layers 6 & 7
Zoom-inZoom-in
Rotate: Take sum and differenceRotate: Take sum and difference
22 msCalYPosLLRmsCalXPosLLRCalLLRms
Check for Clean EntryCheck for Clean Entry
CUT THESE EVENTS
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Backside CutsBackside CutsCal67Sum = CalELayer7*2 + CalELayer6Cal67Diff = CalELayer7 - CalELayer6
((Cal67Sum - 66.)/33.5)^2 + ((Cal67Diff + .4)/7.2)^2 < 1.2 &CalLLRms < 30
Cal SidesCal Sides
Gamma Eff.: 99.4%Bkg Eff.: 84.5% kills 22426 / 145078
Spectrum of what's killedSpectrum of what's killed
Compare Edge Energy with total CAL EnergyCalDeltaEdgeEnergy = (CalEnergyRaw - CalEdgeEnergy)/ max(CalEnergyRaw ,1.)
Use the CalEdgeEnergy to flag signal
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1Tkr & nTkr Cases1Tkr & nTkr CasesCalDeltaEdgeEnergy < .4 |(CalDeltaEdgeEnergy < .95 - (30./(CalEdgeEnergy+20))^2 & CalEdgeEnergy < 300)) &CalDeltaEdgeEnergy < (1.1 - CalEdgeEnergy/200)
VTX CaseVTX Case(CalDeltaEdgeEnergy < .6 & CalDeltaEdgeEnergy < 6/CalEdgeEnergy & CalEdgeEnergy < 190)
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Putting the Back & Sides togetherPutting the Back & Sides together
Kills ~ 38% BkgCost: 1.4% Gammas
VTX PreFilterVTX PreFilterAccept if(CTBTkrCoreCalDoca < -3.9 & CalTrkXtalRmsTrunc > 12.4) |(CTBTkrCoreCalDoca >= -3.9 & CalTransRms > 13)
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1Tkr PreFilter1Tkr PreFilterReject if(XtalRmsTkrCoreDoca > -3 & CalTrkXtalRmsE > 12)
nTkr PreFilternTkr PreFilterAccept if((CTBTkrCoreCalDoca < -.3635) | (CalZEcntr >=-117.6 & CalTransRms >= 14.73)) & !((CalMIPRatio < 4 & CalLLRms > 5) | ((CalEnergyRaw - CalEdgeEnergy) < 100/sqrt(max(1, CTBBestEnergy)) & CalEdgeEnergy > 2) | (XtalRmsTkrCoreDoca > -3 & CalTrkXtalRmsE > 12))
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The resulting probability distributions. Notice that the Gamma loss is small for low CALGamProb cuts and the rate the loss increases is ~ zero.
Pass 5 - Pass 6 PreFilter ComparisonPass 5 - Pass 6 PreFilter Comparison
Overall small improvements seen.