Event selection |
---|
pixelMatchGsfElectrons
globalMuons
Reconstructed lepton observables | |||||
---|---|---|---|---|---|
spectrum | distribution | Track impact parameter | |||
e | |||||
electromagnetic fraction | Isolation in tracker and calorimeter | ||||
e | |||||
Lepton selection | |||
---|---|---|---|
Selection steps | Electrons selected | Muons selected | |
kinematics | ; | ||
calorimetric cuts | |||
isolation | |||
id |
Sample | Leptonic purity | |
---|---|---|
e | ||
Madgraph |
1.00 0.02 | 0.98 0.02 |
Alpgen |
0.96 0.01 | 0.952 0.005 |
Purity | 0.96 0.01 (stat) 0.03 (syst) | 0.952 0.005 (stat) 0.03 (syst) |
Sample | P(select n hard leptons) | ||
---|---|---|---|
0 | 1 | 2 | |
Madgraph |
0.240 0.004 | 0.487 0.006 | 0.273 0.004 |
Alpgen |
0.227 0.001 | 0.483 0.002 | 0.290 0.002 |
0.227 0.001 (stat) 0.013 (syst) | 0.483 0.002 (stat) 0.004 (syst) | 0.290 0.002 (stat) 0.018 (syst) |
Reconstructed jet observables | ||||
---|---|---|---|---|
spectrum | distribution | emf | b-tag discriminator | |
Calorimetric constituents | Associated tracks | |||
nearest jet | ||||
All b
and All q
samples).
Jet properties | |||||
---|---|---|---|---|---|
x | S(x) and B(x) | Cross correlations | |||
, number of towers with of the jet energy | |||||
, jet index in a ordered jet collection | |||||
Combined Likelihood | |||||
likelihood | signal efficiency vs. background efficiency | ||||
Jet selection | ||||
---|---|---|---|---|
Selection steps | Jets surviving selection | Multiplicity | Likelihood (after pre-selection) | |
kinematics | ; | |||
calorimetric cuts | ||||
topology | ||||
likelihood |
Sample | Jet purity | |
---|---|---|
Madgraph |
0.726 0.007 | |
Alpgen |
0.725 0.003 | |
Purity | 0.725 0.003 (stat) 0.01 (syst) |
Sample | P(select n hard jets) | ||
---|---|---|---|
0 | 1 | 2 | |
Madgraph |
0.137 0.003 | 0.427 0.005 | 0.435 0.005 |
Alpgen |
0.124 0.001 | 0.425 0.002 | 0.451 0.002 |
0.124 0.001 (stat) 0.013 (syst) | 0.425 0.002 (stat) 0.003 (syst) | 0.451 0.002 (stat) 0.016 (syst) |
corMetType1Icone5
algorithm, after selecting at least 2 leptons and 2 jets, is shown below:
or
of HLT trigger bits dedicated to single leptons: HLT1ElectronRelaxed
HLT1Electron
HLT1MuonIso
HLT1MuonNonIso
Selection step | Constraints | Event selection |
---|---|---|
or of HLT trigger bits for single leptons |
||
2 leptons | ; | |
id : | ||
2 jets | ; | |
op. sign leptons |
CSA07
samples).
Total events accepted (L=100/pb) | ||||||||
---|---|---|---|---|---|---|---|---|
Selection step | Physics process | |||||||
other | ||||||||
triggered | 2528 11 | 22048 31 | 869 0.6 | 169 0.2 | 2684 11 | 4734 12 | 1300 6 | 530 4 |
leptons | 773 6 | 29 1 | 134 5 | 275 6 | 111 2 | 176 2 | 25.6 0.8 | 9.4 0.6 |
jets | 492 5 | 21 1 | 13.4 0.8 | 19.4 1.4 | 31.3 0.8 | 11.4 0.6 | 2.5 0.3 | 1.1 0.2 |
MET | 350 4 | 13.4 0.8 | 5.5 0.8 | 6.8 0.7 | 21.2 0.7 | 7.6 0.5 | 1.4 0.2 | 0.4 0.1 |
opposite sign | 346 4 | 8.3 0.6 | 1.8 0.5 | 6.4 0.7 | 20.4 0.6 | 7.5 0.5 | 0.8 0.1 | 0.3 0.1 |
Sample | |
---|---|
Madgraph (all b) |
0.0035 0.0004 |
Madgraph (all q) |
0.0040 0.0005 |
Alpgen |
0.0043 0.0005 |
4.3 0.5 (stat) 0.8 (syst) |
Jet multiplicity | |
---|---|
b-tag multiplicity (TC2 ) |
|
Jet+lepton pair kinematics at Monte-Carlo level | ||
---|---|---|
Invariant mass | Transverse mass (square root) | |
distributions | ||
---|---|---|
Event type | Kinematics used in jet+lepton pairing | |
Invariant mass | Transverse mass (square root) | |
Signal | ||
Background |
Selection cut for distributions | ||||
---|---|---|---|---|
Subtraction mode | Kinematics used in jet+lepton pairing | |||
Invariant mass | Transverse mass (square root) | |||
Flip | 3.35 | 2.45 | ||
Swap | 2.15 | 0.75 |
b-tag multiplicity distributions | |||||
---|---|---|---|---|---|
b-tag working point | Full data | After background subtraction | |||
Invariant mass flip | Invariant mass swap | Transverse mass (square root) flip | Transverse mass (square root) swap | ||
Loose point for track counting (TC2=2.3) | |||||
Medium point for track counting (TC2=5.3) |