The b-tag efficiency data-to-simulation scale factor for the MV1 tagging algorithm
at 70% efficiency on 8 TeV data,
using a tag and probe method based on kinematic selection
on ttbar dilepton sample with two jets in the final state.
The jets are reconstructed from topological clusters using the anti-kt algorithm
with a distance parameter of 0.4, applying the local calibration scheme.
eps-file png-file | ![]() |
The b-tag efficiency data-to-simulation scale factor for the MV1 tagging algorithm
at 70% efficiency on 8 TeV data, using system8 method on muon-jet sample.
The jets are reconstructed from topological clusters using the anti-kt algorithm
with a distance parameter of 0.4 at the electromagnetic scale and then calibrated to
the hadronic scale.
eps-file png-file | ![]() |
The b-tag efficiency data-to-simulation scale factor for the MV1 tagging algorithm
at 70% efficiency (overall simulation efficiency integrated for jets with pT > 15GeV and |η| < 2.5),
extrapolated from a sample of c jets containing D* mesons analyzed for the 2011 data to a sample of inclusive c jets. The scale factors are with respect to a Pythia6 simulation.
eps-file png-file | ![]() |
The b-tag efficiency data-to-simulation scale factor for the MV1 tagging algorithm
at 70% efficiency (overall simulation efficiency integrated for jets with pT > 15GeV and |η| < 2.5),
obtained by combining the dijet-based pTrel and system8 analyses with
the ttbar-based kinematic fit (l+jets) and kinematic selection (dilepton sample) analyses
for 2011 data.
eps-file png-file | ![]() |
Soft muon tagging multiplicity per jet. Jets of pseudorapidity |eta| < 1.8 and ET> 20 GeV were selected. Stacked histogram: simulation. Markers: 7 TeV data. The following cuts have been applied to these muons:
eps-file png-file | ![]() |
Transverse momentum of the soft muon tagging candidate. Stacked histogram: simulation. Markers: 7 TeV data. eps-file png-file | ![]() |
Delta R (in etaxphi) between the muon and the jet. Stacked histogram: simulation. Markers: 7 TeV data. eps-file png-file | ![]() |
Matching chi2/dof of the combined muons. Combined muons correspond to a track fully reconstructed in the muon spectrometer and matched with a track in the inner detector. In the work presented here, the muon spectrometer track is extrapolated to the interaction point and is statistically combined to the inner detector track. The matching chi2 corresponds to this statistical combination. Stacked histogram: simulation. Markers: 7 TeV data. eps-file png-file | ![]() |
Impact parameter of the candidates with regard to the primary vertex.
Stacked histogram: simulation. Markers: 7 TeV data.
eps-file png-file | ![]() |
Impact parameter significance of the candidates with regard to the primary vertex. Stacked histogram: simulation. Markers: 7 TeV data.
eps-file png-file | ![]() |
Transverse momentum with regard to the jet axis (pTrel) of the soft muon tagging
candidates. To compute pTrel, the jet momentum is corrected by adding the muon
momentum to it. Stacked histogram: simulation. Markers: 7 TeV data.
eps-file png-file | ![]() |
Soft muon tagger weight, i.e. likelihood ratio of the pTrel variable
for b and light jets. Combined and low-pT muons are treated in separate likelihoods, hence the dip in the weight distribution between 2 and 2.5. The low-pT muons tend to have a smaller weight than the combined muons.
Stacked histogram: simulation. Markers: 7 TeV data.
eps-file png-file | ![]() |
This jet has all the characteristics of a b-jet with a semi-leptonic decay (to a muon). Vertex Taggers: The jet is tagged by both the JetProb and the SV0 tagger, with Jet probability = 1E-9 and SV0 L/sigma(L)= +24 Muon Tagger: A combined muon with a likelihood ratio of 4.6, with the following properties:
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PDFdilep.eps | r1 | manage | 9.3 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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PDFdilep.png | r1 | manage | 6.8 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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Scale_pt_MV1-70.eps | r1 | manage | 9.4 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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Scale_pt_MV1-70.png | r1 | manage | 15.2 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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comb2011.eps | r1 | manage | 12.9 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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comb2011.png | r1 | manage | 37.2 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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d0_n55.eps | r1 | manage | 14.5 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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d0sig_n56.eps | r1 | manage | 14.2 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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d0sig_n56.png | r1 | manage | 10.0 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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display4349994d.eps | r1 | manage | 3088.6 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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display4349994d.png | r1 | manage | 1614.6 K | 2017-11-07 - 09:16 | GianlucaPicco | |
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ntagsperjet_n7.eps | r1 | manage | 14.4 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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ntagsperjet_n7.png | r1 | manage | 11.4 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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softmupt_n48.eps | r1 | manage | 15.5 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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softmupt_n48.png | r1 | manage | 12.0 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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softmuweight_n9.eps | r1 | manage | 16.2 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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softmuweight_n9.png | r1 | manage | 13.3 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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stacomatchchi2_n13.eps | r1 | manage | 16.5 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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stacomatchchi2_n13.png | r1 | manage | 13.7 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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system8.eps | r1 | manage | 10.1 K | 2017-11-07 - 09:17 | GianlucaPicco | |
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