Measurement of the top quark pole mass using tt¯+jet events in the dilepton final state in proton-proton collisions at s = 13 TeV

The CMS collaboration [email protected]

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2 Citations (Scopus)

Abstract

A measurement of the top quark pole mass mtpole in events where a top quark-antiquark pair (tt¯) is produced in association with at least one additional jet (tt¯+jet) is presented. This analysis is performed using proton-proton collision data at s = 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3 fb−1. Events with two opposite-sign leptons in the final state (e+e, μ+μ, e±μ) are analyzed. The reconstruction of the main observable and the event classification are optimized using multivariate analysis techniques based on machine learning. The production cross section is measured as a function of the inverse of the invariant mass of the tt¯+jet system at the parton level using a maximum likelihood unfolding. Given a reference parton distribution function (PDF), the top quark pole mass is extracted using the theoretical predictions at next-to-leading order. For the ABMP16NLO PDF, this results in mtpole = 172.93 ± 1.36 GeV.

Original languageEnglish
Article number77
JournalJournal of High Energy Physics
Volume2023
Issue number7
DOIs
Publication statusPublished - 2023 Jul

Bibliographical note

Publisher Copyright:
© The Author(s) 2023.

Keywords

  • Hadron-Hadron Scattering
  • Top Physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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