Measurement of the top quark mass with lepton plus jets final states using pp collisions at √<i>s</i>=13 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Dragicevic, M, Eroe, J, Del Valle, A Escalante
et al (show 2275 more authors) (2018) Measurement of the top quark mass with lepton plus jets final states using pp collisions at √<i>s</i>=13 TeV. EUROPEAN PHYSICAL JOURNAL C, 78 (11). 891-.

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Abstract

The mass of the top quark is measured using a sample of t t ¯ events collected by the CMS detector using proton-proton collisions at s = 13 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 fb - 1 . For each event the mass is reconstructed from a kinematic fit of the decay products to a t 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 q q ¯ ' 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 ± 0.08 (stat+JSF) ± 0.62 (syst) GeV . The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of t t ¯ production, and no indications of a bias in the measurements are observed.

Item Type: Article
Uncontrolled Keywords: CMS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 18 Feb 2019 17:39
Last Modified: 24 Jan 2024 13:13
DOI: 10.1140/epjc/s10052-018-6332-9
Open Access URL: https://doi.org/10.1140/epjc/s10052-018-6332-9
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3033063