@misc{10481/83202,
year = {2023},
month = {6},
url = {https://hdl.handle.net/10481/83202},
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 mℓμ of the lepton, ℓ (with ℓ = 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 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.].},
organization = {CERN},
organization = {MICINN},
organization = {COST},
organization = {ERC},
organization = {ERDF},
organization = {Horizon 2020},
organization = {Marie Skłodowska-Curie Actions},
organization = {European Union},
organization = {La Caixa
Banking Foundation},
organization = {Generalitat de Catalunya CERCA},
organization = {PROMETEO},
organization = {Generalitat Valenciana GenT},
organization = {PIC},
publisher = {Springer Science and Business Media Deutschland GmbH},
keywords = {Hadron-Hadron Scattering},
keywords = {Top Physics},
title = {Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s = 13 TeV with the ATLAS detector},
doi = {10.1007/JHEP06(2023)019},
author = {Atlas Collaboration and Aad, G. and Aguilar Saavedra, Juan Antonio},
}