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Measurement of the top-quark mass in t t-bar events with lepton+jets final states in pp collisions at sqrts=7 TeV

The CMS Collaboration. (2012)cite arxiv:1209.2319Comment: Submitted to the Journal of High Energy Physics.

Abstract

The mass of the top quark is measured using a sample of t t-bar candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at sqrts = 7 TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 inverse femtobarns. For each event the mass is reconstructed from a kinematic fit of the decay products to a t t-bar hypothesis. The top-quark mass is determined simultaneously with the jet energy scale JES, constrained by the known mass of the W boson in q anti-q decays, to be 173.49 +/- 0.43 stat.+JES +/- 0.98 syst. GeV.

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Measurement of the top-quark mass in t t-bar events with lepton+jets final states in pp collisions at sqrt(s)=7 TeV

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