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The discriminant distribution for the MVA trained for the triple-jet category top tagger in semileptonic ttbar MC after the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the pTmiss must be greater than 0.3, and at least one b-tagged jet. The results are shown separately for top candidates matched to generator level top quarks and unmatched candidates. |
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The misidentification rate of the top tagger used in SUS-16-050 in comparison with the previous cut-base version of the top tagger used in SUS-16-009. The misidentification rate is calculated on an event-wise basis using Z->nunu MC as the ratio of events with at least one reconstructed top quark to the total number of events as a function of pTmiss. The results are produced from a ttbar MC sample generated with one leptonic and one hadronicaly decaying top with the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the pTmiss must be greater than 0.3, and at least one b-tagged jet. |
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The trijet candidate mass variable which is input to the top tagger. The distribution is shown for 4 different categories: the candidates passing/failing the MVA random forest discriminator are show in red/blue respectively while those matched to a generator level top quark vs unmatched ane shown in dotted green/black respectively. The results are produced from a ttbar MC sample generated with one leptonic and one hadronicaly decaying top with the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the pTmiss must be greater than 0.3, and at least one b-tagged jet. |
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The invariant mass of the second and third highest momentum jets in the trijet rest frame which is input to the top tagger. The second and third highest momentum jets sorted in the rest frame should form the W candidate. The distribution is shown for 4 different categories: the candidates passing/failing the MVA random forest discriminator are show in red/blue respectively while those matched to a generator level top quark vs unmatched ane shown in dotted green/black respectively. The results are produced from a ttbar MC sample generated with one leptonic and one hadronicaly decaying top with the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the pTmiss must be greater than 0.3, and at least one b-tagged jet. |
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The angular separation in the trijet restframe between the second and third highest momentum jets in the trijet rest frame which is input to the top tagger. The distribution is shown for 4 different categories: the candidates passing/failing the MVA random forest discriminator are show in red/blue respectively while those matched to a generator level top quark vs unmatched ane shown in dotted green/black respectively. The results are produced from a ttbar MC sample generated with one leptonic and one hadronicaly decaying top with the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the MET must be greater than 0.3, and at least one b-tagged jet. |
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The momentum of the highest momentum jet in the trijet rest frame which is input to the top tagger. The distribution is shown for 4 different categories: the candidates passing/failing the MVA random forest discriminator are show in red/blue respectively while those matched to a generator level top quark vs unmatched are shown in dotted green/black respectively. The results are produced from a ttbar MC sample generated with one leptonic and one hadronicaly decaying top with the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the pTmiss must be greater than 0.3, and at least one b-tagged jet. |
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The combined secondary vertex (CSV) b-tagging discriminator of the highest momentum jet in the trijet rest frame which is input to the top tagger. The discontinuity around 0.84 is due to the requirement that no top can have more than one b-tagged jet. The distribution is shown for 4 different categories: the candidates passing/failing the MVA random forest discriminator are show in red/blue respectively while those matched to a generator level top quark vs unmatched are shown in dotted green/black respectively. The results are produced from a ttbar MC sample generated with one leptonic and one hadronicaly decaying top with the following requirements: pTmiss > 250 GeV, no electron or muon with pT > 10 GeV, at least 4 jets with pT > 30 GeV, the Δφ between the three leading pT jets and the pTmiss must be greater than 0.3, and at least one b-tagged jet. |