The mass of the top quark is measured using a sample of tt⎯ candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at √s=7 TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 fb−1. For each event the mass is reconstructed from a kinematic fit of the decay products to a tt⎯ hypothesis. The top-quark mass is determined simultaneously with the jet energy scale (JES), constrained by the known mass of the W boson in qq⎯⎯ decays, to be 173.49 ± 0.43 (stat. + JES) ±0.98 (syst.) GeV
Measurement of the top-quark mass in t-tbar events with lepton+jets final states in pp collisions at sqrt(s)=7 TeV
TOSI, SILVANO;
2012-01-01
Abstract
The mass of the top quark is measured using a sample of tt⎯ candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at √s=7 TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 fb−1. For each event the mass is reconstructed from a kinematic fit of the decay products to a tt⎯ hypothesis. The top-quark mass is determined simultaneously with the jet energy scale (JES), constrained by the known mass of the W boson in qq⎯⎯ decays, to be 173.49 ± 0.43 (stat. + JES) ±0.98 (syst.) GeVFile in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.