Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV

The CMS Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in pp collisions at √s = 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 35.9 fb1. The measurement is performed in the lepton+jets channel of tt events, where the lepton is an electron or muon. The products of the hadronic top quark decay t → bW → bqq 0 are reconstructed as a single jet with transverse momentum larger than 400 GeV. The tt cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6 ± 2.5 GeV. A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of three relative to an earlier measurement.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Nov 9 2019

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Measurement of the jet mass distribution and top quark mass in hadronic decays of boosted top quarks in pp collisions at √s = 13 TeV'. Together they form a unique fingerprint.

Cite this