: 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 sqrt(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 topquark 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
V. Sola;AMAPANE, Nicola Carlo;ARGIRO', Stefano;COSTA, Marco;MIGLIORE, Ernesto;MONACO, Vincenzo;MUSICH, MARCO;OBERTINO, Maria Margherita;PELLICCIONI, Mario;ROMERO, Alessandra;SACCHI, Roberto;SOLANO, Ada Maria;BELLAN, Riccardo;COVARELLI, Roberto;
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 sqrt(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 topquark 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:
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