Overview of results on trigger efficiencies for ttbar CSA07 samples (Part of the work towards AN note: Trigger performance for top events: evaluation, validation and monitoring) J.Cuevas, U.Oviedo M.Felcini, UCD P.Lobelle, IFCA Top quark meeting – 10/04/08 1

TRIGGER EFFICIENCIES IN 1_6_7 2

Semileptonic events 1 lepton from W p T gen >10 GeV, ||<2.4 At least 1 lepton p T >20 GeV ||<2.0 and 2 jets (E T Corr >20,||<2.4) Dileptonic events 2 leptons from W p T gen >10 GeV, ||<2.4 At least 2 leptons p T >20 GeV, p T >15 GeV ||<2.0, opposite charge 2 jets (E T Corr >20,||<2.4) Off-line selection Generator cuts and cuts andacceptance Trigger path name HLT threshold (GeV) HLT1MuonNonIso16 HLT1MuonIso11 HLT1ElectronRelaxed17 HLT1Electron15 HLT2MuonNonIso3,3 HLT2ElectronRelaxed12,12 HLTXElectronMuonRelaxed10,10 HLTXElectronMuon8,7 HLT1jet200 efficiencies reported efficiencies reported  trig  trig  based on MC information  trig/off  trig/off  relative to the offline selection Used sample: CSA07 Chowder All Events CMSSW 167 ( TTBAR) EVENT SELECTION 3

Final state bjjb evbjjb bbbbbbbb ebeb ebb N off/acc  off/acc 79.9 ± ± ± ± ±0.6  trig/off HLT1MuonNonIso 89.7 ± ± ±1 3.4 ± ±0.9 HLT1MuonIso 73.3 ± ± ± ± ±0.8 HLT1ElectronRelaxed 0.48 ± ± ± ± ±0.8 HLT1Electron 0.48 ± ± ± ± ±0.8 HLT2MuonNonIso 13.2 ± ± ± ± ±0.2 HLT2ElectronRelaxed 0.38 ± ± ± ±1 4.0 ±0.1 HLTXElectronMuonRela xed 0.97 ± ± ± ± ±0.8 HLTXElectronMuon 0.84 ± ± ± ± ±0.6 HLT1jet 12.1 ± ± ± ± ±0.3 EFFICIENCIES wrt OFFLINE SELECTION 4

tt->bjjb HLT1MuonNonIso tt->bb HLT2MuonNonIso tt->ebjjb HLT1ElectronRelaxed tt->ebeb HLT2ElectronRelaxed Off-line based trigger efficiencies vs  and pT Normalized to 100pb -1 5

Semileptonic events 1 lepton from W p T gen >10 GeV, ||<2.4 At least 1 lepton p T >20 GeV ||<2.0, isolated 2 jets (E T Corr >20,||<2.4) Dileptonic events 2 leptons from W p T >10 GeV ||<2.4 At least 2 leptons p T >20 GeV, ||<2.0, opposite charge, isolated 2 jets (E T Corr >20,||<2.4) Off-line selection Generator cuts cuts isolation cuts isolation cuts Muons Track isolation (POG)  SumpT of tracks in dR=0.3 Calo Isolation (POG)  Sum of energy deposits in HCal +ECal +HO in dR=0.3 Electrons Track isolation (TQAF)  SumpT of tracks in dR=0.3 – pT of electron track Calo isolation (TQAF)  SumET of calotowers in dR=0.3 – electron. caloEnergy() Quality cuts Quality cuts HOverE<0.05, 0.8<EOverP<3 TrackIso<3, CaloIso<5 TrackIso<3, CaloIso<6 Used sample: CSA07 Chowder All Events CMSSW 167 ( TTBAR) 6

Final state bjjb evbjjb bbbbbbbb ebeb ebb N gen acceptanc acceptance 87.7± ± ± ±0.9  off/acc 69.0± ± ± ± ±0.7  trig/off HLT1MuonNonIso 91.6 ± ± ±3 3.3 ± ±2 HLT1MuonIso 82.0 ± ± ± ± ±2 HLT1ElectronRelaxed 0.45 ± ± ± ±3 81 ±2 HLT1Electron 0.47 ± ± ± ±3 77 ±2 HLT2MuonNonIso 12.9 ± ± ±2 0.4 ± ±0.5 HLT2ElectronRelaxed 0.36 ± ± ± ±3 3.4 ±0.3 HLTXElectronMuonRel axed 0.97 ± ± ± ± ±2 HLTXElectronMuon 0.97 ± ± ± ± ±1 HLT1jet 10.6 ± ± ± ± ±0.5 EFFICIENCIES wrt OFFLINE SELECTION (Requiring isolated leptons) 7

tt->ebjjb HLT1ElectronRelaxed New selection with Isolation cuts Usual selection Off-line based trigger efficiencies Normalized to 100pb -1 8

HLT1MuonNonIso 16x17x18x MinPt16.0 Nsigma_Pt2.2 MaxDr HLT1ElectronRelaxed 16x17x18x MinEt18.0 HCal Isol Barrel ||<1.5 Endcap ||> E/p barrel endcap /E-1/P < /E-1/P < Track Isol pt0.06 HLT2MuonNonIso 16x17x18x MinPt3.0 Nsigma_Pt2.2 MaxDr FILTERS APPLIED IN NON ISOLATED PATHS FILTERS APPLIED IN NON ISOLATED PATHS 9

HLT2ElectronRelaxed 16x17x18x MinEt12.0 HCal Isol Barrel ||<1.5 Endcap ||> E/p barrel endcap Track Isol pt0.4 HLTXElectronMuonRelaxed 16x17x18x MinPt10.0 Nsigma_Pt2.2 MaxDr MinEt10.0 HCal Isol Barrel ||<1.5 Endcap ||> E/p barrel endcap Track Isol pt0.06 Muon Electron 10

TRIGGER EFFICIENCIES IN 1_8_3 11

Semileptonic events 1 lepton from W p T gen >10 GeV, ||<2.4 At least 1 lepton p T >20 GeV,||<2.0 2 jets (E T Raw >13,||<2.4) Dileptonic events 2 leptons from W p gen T >10 GeV ||<2.4 At least 2 leptons p T >20 GeV, p T >15 GeV,||<2.0, opposite charge 2 jets (E T Raw >13,||<2.4) Off-line selection Generator cuts cuts efficiencies reported  trig  trig  based on MC information  trig/off  trig/off  relative to the offline selection Trigger path name HLT threshold (GeV) HLT1MuonNonIso16 HLT1MuonIso11 HLT1ElectronRelaxed17 HLT1Electron15 HLT2MuonNonIso3,3 HLT2ElectronRelaxed12,12 HLTXElectronMuonRelaxed10,10 HLTXElectronMuon8,7 HLT1jet200 Used sample: RelValTTbar RelValTTbar CMSSW 183 CMSSW 183 ( events ) EVENT SELECTION 12

Final state bjjb evbjjb bbbbbbbb ebeb ebb N off/acc  off/acc 79±277±258±666±764±5  trig/off HLT1MuonNonIso91±3 ± ±0.5 ±12 98±12 ±1 3±1 ±7 87±7 HLT1MuonIso ±2 72±2 ± ±0.06 ±11 92±110 ±6 70±6 HLT1ElectronRelaxed ± ±0.283±2 ±1 1±1 ±11 95±11 ±7 86±7 HLT1Electron ± ±0.2 ±2 77.4±2 ± ±0.7 ±11 94±11 ±7 82±7 HLT2MuonNonIso ±1 24±1 ± ±0.484±10 ±1 1±1 ±3 22±3 HLT2ElectronRelaxed ± ±0.1 ± ±0.5082±10 ±1 4±1 HLTXElectronMuonRelax ed ± ±0.2 ± ±0.7 ±1 1±1 ±2 7±271±6 HLTXElectronMuon ± ±0.2 ± ±0.1 ±1 1±1 ± ±0.753±5 HLT1jet ± ±0.8 ±3 13±3 ±3 15±3 ±2 12±2 EFFICIENCIES wrt OFFLINE SELECTION 13

tt->bjjb HLT1MuonNonIso tt->ebjjb HLT1ElectronRelaxed Off-line based Off-line based trigger efficiencies trigger efficiencies 14

Semileptonic events 1 lepton from W p T gen >10 GeV, ||<2.4 At least 1 lepton p T >20 GeV,||<2.0, isolated 2 jets (ET Raw >13 GeV,||<2.4) Dileptonic events 2 leptons from W p T >10 GeV ||<2.4 At least 2 leptons p T >20 GeV, pT>15 GeV, ||<2.0, opposite charge, isolated 2 jets (ET Raw >13 GeV,||<2.4) Off-line selection Generator cuts cuts Muons Track isolation (POG)  SumpT of tracks in dR=0.3 Calo Isolation (POG)  Sum of energy deposits in HCal +ECal +HO in dR=0.3 Electrons Track isolation  SumpT of tracks in dR=0.3 – pT of electron track Calo isolation  SumET of calotowers in dR=0.3 – electron. caloEnergy() Quality cuts HOverE<0.05, 0.8<EOverP<3 TrackIso<3, CaloIso<5 TrackIso<3, CaloIso<6 Used sample: RelValTTbar RelValTTbar CMSSW 183 CMSSW 183 ( events ) isolation cuts isolation cuts 15

Final state bjjb evbjjb bbbbbbbb ebeb ebb N gen acceptanc acceptance 88±2 89±2 80 ±7 78 ±7 80 ±5  off/acc 68±2 58 ±2 49 ±6 41 ±5 47 ±4  trig/off HLT1MuonNonIso 91±3 ± ±0.6 ±13 98±13 ±2 3 ±2 ±8 85 ±8 HLT1MuonIso ±3 81±3 ± ±0.05 ±12 94 ±12- ±8 77±8 HLT1ElectronRelaxed ± ± ±3 ± ±0.8 ± ±15 ±9 90 ±9 HLT1Electron ± ±0.2 ±3 88 ±3- ± ±15 ±9 90 ±9 HLT2MuonNonIso ±1 22±1 ± ± ±11 ±2 2 ±2 ±4 25 ±4 HLT2ElectronRelaxed ± ±0.1 ± ± ±14 ±1 4±1 HLTXElectronMuonRelax ed ± ±0.2 ± ±0.8 ± ±0.8 ±3 10 ±3 76 ±8 HLTXElectronMuon ± ±0.2 ± ±0.1 ±1 2±1 ±1 1 ±1 63 ±7 HLT1jet ± ±0.8 ± ±0.8 ±3 12 ±3 ±3 9 ±3 ±2 10 ±2 EFFICIENCIES wrt OFFLINE SELECTION (Requiring isolated leptons) 16

tt->bjjb HLT1MuonNonIso tt->ebjjb HLT1ElectronRelaxed Off-line based Off-line based trigger efficiencies trigger efficiencies 17

1_6_7 1_6_7 97.6% of the offline selected electrons (after applying isolation and quality cuts) in ebjjb events are matched to the and quality cuts) in ebjjb events are matched to the generated from W (dR<0.2) generated from W (dR<0.2) 1_8_3 1_8_3 99.6% of the offline selected electrons (after applying isolation and quality cuts) in ebjjb events are matched to the and quality cuts) in ebjjb events are matched to the generated from W (alpha<0.15) generated from W (alpha<0.15)  < 0.15  99.6% 18

Final state bjjb evbjjb bbbbbbbb ebeb ebb N off/acc  off/acc79±279±258±668±768±5  trig/off HLT1MuonNonIso 93 ±3 ± ±0.598 ±12 ±2 8 ±291±7 HLT1MuonIso ±2 73 ±2 ± ±0.192 ±12076 ±6 HLT1ElectronRelaxed ± ± ±2 2 ±1 ±11 99 ±1187 ±7 HLT1Electron ± ±0.1 ±2 82 ±22 ±1 ±11 97 ±1183 ±7 HLT2MuonNonIso ± ±0.9 ± ± ±12 ± ±0.617 ±2 HLT2ElectronRelaxed ± ±0.1 ± ± ±10 4 ±1 HLTXElectronMuonRelaxed ± ±0.1 ± ±0.62±1 ±3 11 ± ±6 HLTXElectronMuon ± ±0.1 ± ±0.12 ± ±5 HLT1jet ± ±0.7 ± ±0.815 ±4 ±4 22 ±411 ±2 RelValTTbar FASTSIM 1_8_3 EFFICIENCIES wrt OFFLINE SELECTION 19

FULLSIMFASTSIM 1_8_3 1_8_3 tt->bjjb HLT1MuonNonIso tt->ebjjb HLT1ElectronRelaxed 20

SUMMARY 21 Trigger efficiencies for the most relevant paths Trigger efficiencies for the most relevant paths in top quark physics have been estimated in in top quark physics have been estimated in CSA07 samples The evolution of this estimations is studied for The evolution of this estimations is studied for different CMSSW Versions and RelVal Samples and regularly reported to TSG. and regularly reported to TSG. Efficiencies for the Fastsim and Fullsim samples Efficiencies for the Fastsim and Fullsim samples have been compared and found also in reasonable have been compared and found also in reasonable agreement starting with 1_8_3 Samples. agreement starting with 1_8_3 Samples.

BACKUP SLIDES 22

Final state bjjb evbjjb bbbbbbbb ebeb ebb N gen N acc/gen acceptanc acceptance 87.6± ± ± ± ±0.6  trig HLT1MuonNonIso 79.5±0.3 ± ±0.04 ±1 97 ±1 ± ±0.1 ± ±0.7 HLT1MuonIso ± ±0.2 ± ±0.01 ±1 93 ±1 ± ±0.02 ± ±0.6 HLT1ElectronRelaxed ± ± ±0.2 ± ±0.06 ±1 84 ±1 ± ±0.6 HLT1Electron ± ±0.01 ± ±0.2 ± ±0.06 ±1 83 ±1 ± ±0.6 HLT2MuonNonIso ± ±0.1 ± ± ±1 ± ±0.06 ± ±0.2 HLT2ElectronRelaxed ± ±0.01 ± ±0.05 ± ± ±0.8 ± ±0.1 HLTXElectronMuonRel axed ± ±0.02 ± ±0.04 ± ±0.08 ± ± ±0.5 HLTXElectronMuon ± ±0.02 ± ±0.01 ± ±0.08 ± ±0.04 ± ±0.4 HLT1jet ± ±0.1 ± ±0.1 ± ±0.2 ± ±0.3 ± ±0.2 EFFICIENCIES wrt EVENTS WITHIN ACCEPTANCE 1_6_7 23

Final state bjjb evbjjb bbbbbbbb ebeb ebb N gen N acc/gen acceptanc acceptance88±289±280±778±780±5  trig HLT1MuonNonIso81±2 ± ±0.5 ±9 96±9 ±1 4±1 ±5 81±5 HLT1MuonIso ±2 67±2 ± ±0.1 ±8 89±80 ±5 67±5 HLT1ElectronRelaxed ± ±0.272±2 ± ±0.6 ±9 93±9 ±5 75±5 HLT1Electron ± ±0.2 ±2 68±2 ± ±0.7 ±9 91±9 ±5 72±5 HLT2MuonNonIso ± ±0.9 ± ±0.385±8 ± ±0.9 ±2 21±2 HLT2ElectronRelaxed ± ±0.1 ± ±0.4 ± ±0.471±7 ± ±0.8 HLTXElectronMuonRelaxed ± ±0.2 ± ±0.5 ± ±0.9 ±2 7±258±4 HLTXElectronMuon ± ±0.2 ± ±0.1 ±1 2±1 ± ±0.4 ±4 44±4 HLT1jet ± ±0.7 ± ±0.7 ±2 12±2 ±2 10±2 ±2 12±2 EFFICIENCIES wrt EVENTS WITHIN ACCEPTANCE 1_8_3 24

Final state bjjb evbjjb bbbbbbbb ebeb ebb N gen N acc/gen acceptanc acceptance87±288±279±776±681±5  trig HLT1MuonNonIso 83±2 ± ±0.597±9 ±2 9 ±2 ±6 83 ±6 HLT1MuonIso ±2 68 ±2 ± ±0.190 ±90 ±5 72 ±5 HLT1ElectronRelaxed ± ± ±2 2±0.9 ±9 94 ±9 ±5 79 ±5 HLT1Electron ± ±0.1 ±2 75 ±21.4 ±0.8 ±9 91 ±9 ±5 76 ±5 HLT2MuonNonIso ± ±0.8 ± ± ±9 ± ±0.6 ±2 17 ±2 HLT2ElectronRelaxed ± ±0.04 ± ± ±7 ± ±0.9 HLTXElectronMuonRelax ed ± ±0.1 ± ± ±0.8 ±2 10 ±2 60 ±4 HLTXElectronMuon ± ±0.1 ± ±0.12 ±10 ±4 46 ±4 HLT1jet ± ±0.6 ± ±0.711 ±2 ±3 18 ±3 ±2 11 ±2 RelValTTbar FASTSIM 1_8_3 ( events) EFFICIENCIES wrt EVENTS WITHIN ACCEPTANCE 25