TY  - EJOUR
TI  - Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s=13 TeV with the ATLAS detector
IS  - arXiv:2209.00583
M1  - PUBDB-2022-05078
M1  - arXiv:2209.00583
M1  - CERN-EP-2020-018
PY  - 2022
N1  - 32 pages in total, 9 figures, 6 tables, to be submitted to JHEP. All figures including auxiliary figures are available at: https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2017-17/
AB  - A measurement of the top-quark mass (m<sub>t</sub>) in the t―t→ lepton+jets channel is presented, with an experimental technique which exploits semileptonic decays of b-hadrons produced in the top-quark decay chain. The distribution of the invariant mass m<sub><i>l</i>μ</sub> of the lepton, <i>l</i> (with <i>l</i> = e,μ), from the W-boson decay and the muon, μ, originating from the b-hadron decay is reconstructed, and a binned-template profile likelihood fit is performed to extract m<sub>t</sub>. The measurement is based on data corresponding to an integrated luminosity of 36.1 fb<sup>−1</sup> of √s = 13 TeVpp collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. The measured value of the top-quark mass is m<sub>t</sub> = 174.41±0.39 (stat.)±0.66 (syst.)±0.25 (recoil) GeV, where the third uncertainty arises from changing the PYTHIA8 parton shower gluon-recoil scheme, used in top-quark decays, to a recently developed setup.
KW  - p p: colliding beams (INSPIRE)
KW  - top: mass: measured (INSPIRE)
KW  - top: decay (INSPIRE)
KW  - p p: scattering (INSPIRE)
KW  - top: pair production (INSPIRE)
KW  - parton: showers (INSPIRE)
KW  - final state: ((n)jet lepton) (INSPIRE)
KW  - ATLAS (INSPIRE)
KW  - mass spectrum: (lepton muon) (INSPIRE)
KW  - bottom: semileptonic decay (INSPIRE)
KW  - bottom: particle identification (INSPIRE)
KW  - CERN LHC Coll (INSPIRE)
KW  - recoil (INSPIRE)
KW  - data analysis method (INSPIRE)
KW  - numerical calculations: Monte Carlo (INSPIRE)
KW  - experimental results (INSPIRE)
KW  - 13000 GeV-cms (INSPIRE)
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2022-05078
UR  - https://bib-pubdb1.desy.de/record/483007
ER  -