τ jets Tau Selection Efficiency Study William Edson SUNY at Albany Anirvan Sircar Efficiency Equation Definitions Selection Signal Efficiency ε sig 100 ID: 433255
Download Presentation The PPT/PDF document "TTbar" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
TTbar τ + jets:Tau Selection Efficiency Study
William
Edson
SUNY at Albany
Anirvan
SircarSlide2
Efficiency Equation DefinitionsSelection Signal Efficiency:
ε
sig
= 100 *
Σ
matched
τ
’s passing selection /
Σ
total matched
τ
’s
Selection Background
Efficiency:
ε
back
= 100 *
Σ
unmatched
τ
’s passing selection /
Σ
total matched
τ
’s
ID Signal Efficiency
ε
sig
= 100 *
Σ
matched
τ
’s passing selection
/
Σ
total matched
τ
’s prior to ID
ID Background Efficiency
ε
sig
= 100 *
Σ
unmatched
τ
’s passing selection /
Σ
total matched
τ
’s prior to
ID
When denominator = 0, set it to 1
Tau matching via
getTruthMatch
function in
TNtupleAnalyzer
code
total matched determined during Object Selection
matched/unmatched during tau cut (C7
)Slide3
Efficiency Study Results J0 – J3
J3
TauID
True matched
τ
’sUnmatched Selected τ’s Matched Selected τ’sUnmatched/MatchedBackground EfficiencySignal EfficiencyMatched τ’s Prior to IDID Signal Efficiency ID Background EfficiencyAmount of Events Passing SelectionLlhLoose610NA16.70001000LlhMedium,LlhTight,SigLoose,SigMedium,SigTight6000000000
J0, J1 and J3 events all failed the
cutflow
prior to cut 7 and exhibited no matched
taus
during object selectionSlide4
Efficiency Study Results J4
J4
TauID
True matched
τ
’sUnmatched Selected τ’s Matched Selected τ’sUnmatched/MatchedBackground EfficiencySignal EfficiencyMatched τ’s Prior to IDID Signal Efficiency ID Background EfficiencyAmount of Events Passing SelectionLlhLoose71190NA26.800019000LlhMedium71130NA18.300013000LlhTight7150NA
7.04
0
0
0
500
0
SigLoose
71
13
0
NA
18.3
0
0
0
1300
0
SigMedium
71
10
0
NA
14.1
0
0
0
1000
0
SigTight
71
8
0
NA
11.3
0
0
0
800
0Slide5
Efficiency Study Results J5
J5
TauID
True matched
τ
’sUnmatched Selected τ’s Matched Selected τ’sUnmatched/MatchedBackground EfficiencySignal EfficiencyMatched τ’s Prior to IDID Signal Efficiency ID Background EfficiencyAmount of Events Passing SelectionLlhLoose146450NA30.800045000LlhMedium146280NA19.200028000LlhTight146120NA
8.22
0
0
0
1200
0
SigLoose
146
36
0
NA
24.7
0
0
0
3600
0
SigMedium
146
30
0
NA
20.5
0
0
0
3000
0
SigTight
146
8
0
NA
5.48
0
0
0
800
0Slide6
Efficiency Study Results FullHad
FullHad
TauID
True matched
τ
’sUnmatched Selected τ’s Matched Selected τ’sUnmatched/MatchedBackground EfficiencySignal EfficiencyMatched τ’s Prior to IDID Signal Efficiency ID Background EfficiencyAmount of Events Passing SelectionLlhLoose3672987519726.90.1361435.7705020LlhMedium3672636415917.30.1091428.6454217LlhTight36722520
NA
6.86
0
14
0
1800
6
SigLoose
3672
606
3
202
16.5
0.082
14
21.4
4329
20
SigMedium
3672
406
1
406
11.1
0.027
14
7.14
2900
17
SigTight
3672
166
0
NA
4.52
0
14
0
1186
6Slide7
Efficiency Study Results Signal
Signal
TauID
True matched
τ
’sUnmatched Selected τ’s Matched Selected τ’sUnmatched/MatchedBackground EfficiencySignal EfficiencyMatched τ’s Prior to IDID Signal Efficiency ID Background EfficiencyAmount of Events Passing SelectionLlhLoose89480013525341000.3971.513.814085083.533.12309LlhMedium9380218218288190.2850.8763.074162969.219.71425LlhTight938021
3234
16884
0.192
0.345
1.80
41629
40.6
7.77
773
SigLoose
894800
6775
30250
0.224
0.757
3.38
40850
74.1
16.6
1726
SigMedium
938021
4802
25564
0.188
0.512
2.73
41629
61.4
11.5
1075
SigTight
894800
2000
15050
0.132
0.224
1.68
40850
36.8
4.90
773