Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/10496
Title: Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at ?s = 13 TeV with the ATLAS detector
Authors: Aad, G.
Abbott, B.
Abbott, D.C.
Abed, Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
Keywords: Hadron-Hadron Scattering
Top Physics
Issue Date: 2023
Publisher: Springer Science and Business Media Deutschland GmbH
Abstract: A measurement of the top-quark mass (mt) in the tt¯ ? 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?? of the lepton, ? (with ? = e, ?), from the W-boson decay and the muon, ?, originating from the b-hadron decay is reconstructed, and a binned-template profile likelihood fit is performed to extract mt. The measurement is based on data corresponding to an integrated luminosity of 36.1 fb?1 of s = 13 TeV pp collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. The measured value of the top-quark mass is mt = 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. [Figure not available: see fulltext.]. © 2023, The Author(s).
URI: https://doi.org/10.1007/JHEP06(2023)019
https://hdl.handle.net/20.500.11851/10496
ISSN: 1029-8479
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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