Abstract

The mass of the top quark is measured using a sample of {{text {t}}overline{{text {t}}}} events collected by the CMS detector using proton-proton collisions at sqrt{s}=13,text {TeV} at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9,text {fb}^{-1}. For each event the mass is reconstructed from a kinematic fit of the decay products to a {{text {t}}overline{{text {t}}}} hypothesis. Using the ideogram method, the top quark mass is determined simultaneously with an overall jet energy scale factor (JSF), constrained by the mass of the W boson in {text {q}} overline{{text {q}}} ^prime decays. The measurement is calibrated on samples simulated at next-to-leading order matched to a leading-order parton shower. The top quark mass is found to be 172.25 pm 0.08,text {(stat+JSF)} pm 0.62,text {(syst)} ,text {GeV} . The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of {{text {t}}overline{{text {t}}}} production, and no indications of a bias in the measurements are observed.

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