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  4. Measurement of the top quark mass with lepton+jets final states using $\mathrm {p}$ $\mathrm {p}$ collisions at $\sqrt{s}=13\,\text {TeV} $
 
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Measurement of the top quark mass with lepton+jets final states using $\mathrm {p}$ $\mathrm {p}$ collisions at $\sqrt{s}=13,\text {TeV} $

Sirunyan, Albert M
•
Tumasyan, Armen
•
Adam, Wolfgang
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November 2, 2018
The European Physical Journal C

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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