トリガーと R マッチングが取れないpT>10GeV, |eta|>1.05 の combined muon

織田2010 年 4 月 16 日 ( 金 )

TGC-J ミーティング

1/13

• Used runs • 152166, 152214, 152221, 152345, 152409, 152441,

152508, 152777, 152844, 152845, 152878• Used stream • physics_MinBias

• Good Run List – https://twiki.cern.ch/twiki/pub/AtlasProtected/MCP2010Data/MCP_2010_v0.4.xml

• Package– Trigger/TrigAnalysis/TrigEffJpsiTools-00-06-17-30

• Trigger matching tool with a R cut using AtlasExtrapolator• Ntuple maker with AOD/ESD

• Event selection : MCP one– Good timing (MBTS or LAr)

• abs(MBTStimeDiff)<10 || abs(LArECtimeDiff)<5

– At least 3 good ID tracks• numberOfPixelHits>=1 && numberOfSCTHits>=6

– At least 1 ID track with p>4GeV

2/13

• Muon selection : based on MCP one– Common selection

• hasCombinedMuon==true• |eta (at IP)|>1.05

– TGC region • |eta (at TGC3/RPC2)|<2.4

– To make sure within trigger acceptance. Obtained with TrigEffJpsiTools.– For StacoMuonCollection

• author==6 (Staco) • numberOfSCTHits+numberOfPixelHits>4• matchChi2<50 • |phi(MS)-phi(ID)|<4. or pT(CB)/pT(ID)<2.0

– To reject fake high pT muons by a Staco bug (fixed by f242). A low pT ID track with ~± and a low pT MS track with ~ ∓ give a fake high pT combined muon.

– For MuidMuonCollection• author==12 (MuidCo) • numberOfSCTHits+numberOfPixelHits>5

– Any trigger chamber cut is not used. • To avoid positive bias. • Number of phiLayers cannot be calculated with DESD due to NULL Trk::Track

pointer.

3/13

L1_MU0 efficiency for TGC with Staco combined muons

Black : all good combined muonsGreen : with ROI (+/-3BCs)

Red : with ROI (0BC)Blue : with R match with ROI (0BC)

pT>10GeVGreen : 45/46 = 98+/-2%Red : 44/46 = 96+/-3%Blue: 44/46 = 96+/-3%

No ROI : run152777, event 1305078, eta -1.443, pT 10.75GeVOne ROI at +2BC in Barrel: run152441, event 4361085, eta -2.107, pT 10.87GeV

4/13

L1_MU0 efficiency for TGC with Muid combined muons

Black : all good combined muonsGreen : with ROI (+/-3BCs)

Red : with ROI (0BC)Blue : with R match with ROI (0BC)

pT>10GeVGreen : 49/54 = 91+/-4%Red : 48/54 = 89+/-5%Blue: 46/54 = 85+/-5%

Turn-on curve is slightly different from Staco. Due to difference of momentum scales???

5/13

pT>10GeV 以上で SL が鳴っていないもしくは

R matching が取れない 8 イベント• 2BC 連続トリガー veto のため : Staco, MuidCB

– Run 152441 LB 503 Event 4361085 pT 10.69 GeV eta -2.11 #ROIs(+-3BCs) 1 #ROIs(0BC) 0– Run 152777 LB 114 Event 1305078 pT 11.04 GeV eta -1.44 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

• R matching が取れない。 ID と MS で大きなエネルギー損失のせいなどで ( 横 ) 運動量が大きく異なるため。 : MuidCB (Staco では ID-MS 間のmatchChi2 でカットしているから残っていない )– Run 152409 LB 290 Event 2563419 pT 14.32 GeV eta -2.34 #ROIs(+-3BCs) 1 #ROIs(0BC) 1– Run 152508 LB 252 Event 1518988 pT 14.14 GeV eta 1.35 #ROIs(+-3BCs) 1 #ROIs(0BC) 1

• TGC の外をトラックが通っている : MuidCB (Staco ではトリガーチェンバーヒットをトラッキングのシードに使っているから、トラックを引かない )– Run 152441 LB 408 Event 2635420 pT 13.23 GeV eta -1.07 #ROIs(+-3BCs) 0 #ROIs(0BC) 0– Run 152777 LB 264 Event 3850705 pT 10.34 GeV eta 1.12 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

• TGC2 にヒットがない。 HV のせい ? : MuidCB– Run 152777 LB 149 Event 1930625 pT 13.51 GeV eta 2.19 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

• HiPt Wire と HiPt Strip はあり、 veto されているわけでもないが SL がない。 : MuidCB ( 早川さん、確認お願いします。 )– Run 152409 LB 399 Event 4227845 pT 10.21 GeV eta 1.19 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

6/13

run152441, lb503, event 4361085with an ROI in Barrel

run152777, lb114, event 1305078with no ROICurr BC : HiPt Wire C EC phi30 trackletId9 sub1

Curr BC : HiPt Strip C EC phi30 trackletId39 sub1 (vetoed)Curr BC : HiPt Strip C EC phi30 trackletId41 sub1 (vetoed)Next BC : HiPt Strip C EC phi30 trackletId39 sub1Next BC : HiPt Strip C EC phi30 trackletId41 sub1

Curr BC : HiPt Wire C FWD phi14 trackletId3 sub0Curr BC : HiPt Strip C FWD phi30 trackletId33 sub1 (vetoed)Next BC : HiPt Strip C FWD phi30 trackletId33 sub1

7/13

Staco

Run152409, event2563419, lb0290._0005.18/13

pT(MuidCB) 14.32 GeV eta -2.34 #ROIs(+-3BCs) 1 #ROIs(0BC) 1

Muid : matchChi2=46.1pT(CB)=14.32GeV, pT(ID)=19.85GeV, pT(MS)=11.85GeVeta(CB)=-2.342, eta(ID)=-2.342, eta(MS)=-2.342, eta(TGC3)=-2.311phi(CB)=-2.763, phi(ID)=-2.764, phi(MS)=-2.732, phi(TGC3)=-2.772R=0.0692 > 3sigma(extrapolation)+half diagonal ROI length=3*0.0093+sqrt(1/2)*0.0340=0.0520

Staco: rejected by matchChi2=85.5>50pT(CB)=12.99GeV, pT(ID)=19.85GeV, pT(MS)=11.06GeVeta(CB)=-2.340, eta(ID)=-2.342, eta(MS)=-2.342, eta(TGC3)=-2.311phi(CB)=-2.762, phi(ID)=-2.764, phi(MS)=-2.732 phi(TGC3)=-2.772

SL C Forward phi 14 (eta=-2.279, phi=-2.711)

Run152508, even1518988, lb0252._0001.19/13

Muid : matchChi2=40.9pT(CB)=14.14GeV, pT(ID)=14.93GeV, pT(MS)=7.65GeVeta(CB)=1.346, eta(ID)=1.346, eta(MS)=1.339, eta(TGC3)=1.335phi(CB)=-2.877, phi(ID)=-2.877, phi(MS)=-2.904, phi(TGC3)=-2.869R=0.0692 > 3sigma(extrapolation)+half diagonal ROI length=3*0.0114+sqrt(1/2)*0.0190=0.0477

Staco: rejected by matchChi2=51.7>50pT(CB)=13.56GeV, pT(ID)=14.93GeV, pT(MS)=8.03GeVeta(CB)=1.346, eta(ID)=1.346, eta(MS)=1.335, eta(TGC3)=1.335phi(CB)=-2.877, phi(ID)=-2.877, phi(MS)=-2.915, phi(TGC3)=-2.869

SL A Endcap phi 26 (eta=1.296, phi=-2.926)

Energy deposit in LAr EMB and Tile Endcap

pT(MuidCB) 14.14 GeV eta 1.35 #ROIs(+-3BCs) 1 #ROIs(0BC) 1

Run152441, event2635420, lb0408._0014.110/13

Positive charge on Side C inefficiencyMuidCB and MuTag reconstructed this track but Staco didn’t. No TGC trigger, No TGC hit, the track passes outside TGC pT(CB)=13.23GeV, pT(ID)=13.31GeV, pT(MS)=28.29GeVeta(CB)=-1.075, eta(ID)=-1.075, eta(MS)=-0.939, eta(TGC3)=-1.068

pT(MuidCB) 13.23 GeV eta -1.07 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

Run152777, event3850705, lb0264._0008.111/13

Negative charge on Side A inefficiencyMuidCB and MuTag reconstructed this track but Staco didn’t. No TGC trigger, no TGC hit, the track passes outside TGC eta(CB)=1.118, eta(ID)=1.118, eta(MS)=1.117, eta(TGC3)=1.107

pT(MuidCB) 10.34 GeV eta 1.12 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

Run152777, even1930625, lb0149._0001.112/13

No TGC triggerNo hits in TGC2 Forward A12 phi2HV issue???No Muonboy segment.

pT(MuidCB) 13.51 GeV eta 2.19 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

Run152409, event4227845, lb0399._0003.113/13

Previous BC HiPt Strip A Endcap phi 14 trackletId 33 sub 0 (vetoed)Previous BC HiPt Strip A Endcap phi 14 trackletId 35 sub 0 (vetoed)Current BC HiPt Wire A Endcap phi 14 trackletId 3 sub 1Current BC HiPt Strip A Endcap phi 14 trackletId 33 sub 0Current BC HiPt Strip A Endcap phi 14 trackletId 35 sub 0

pT(MuidCB) 10.21 GeV eta 1.19 #ROIs(+-3BCs) 0 #ROIs(0BC) 0

Two negative muons. Invariant mass 10.9GeV

pT(Staco) 9.78GeV

Why no SL??