Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/139544
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Type: | Journal article |
Title: | Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s = 13 TeV with the ATLAS detector |
Other Titles: | Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at root s = 13 TeV with the ATLAS detector |
Author: | Aad, G. Abbott, B. Abbott, D.C. Abed Abud, A. Abeling, K. Abhayasinghe, D.K. Abidi, S.H. AbouZeid, O.S. Abraham, N.L. Abramowicz, H. Abreu, H. Abulaiti, Y. Acharya, B.S. Achkar, B. Adachi, S. Adam, L. Adam Bourdarios, C. Adamczyk, L. Adamek, L. Adelman, J. et al. |
Citation: | The Journal of High Energy Physics, 2023; 2023(6):19-0-19-55 |
Publisher: | Springer-Verlag |
Issue Date: | 2023 |
ISSN: | 1029-8479 1029-8479 |
Statement of Responsibility: | G. Aad ... P. Jackson ... A.X.Y. Kong ... A. Petridis ... H. Potti ... A. Qureshi ... A.S. Sharma ... M.J. White ... et al. (The ATLAS collaboration) |
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. |
Keywords: | Hadron-Hadron Scattering; Top Physics |
Description: | Published: June 5, 2023 |
Rights: | Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development. |
DOI: | 10.1007/JHEP06(2023)019 |
Published version: | http://dx.doi.org/10.1007/jhep06(2023)019 |
Appears in Collections: | Physics publications |
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hdl_139544.pdf | Published version | 1.67 MB | Adobe PDF | View/Open |
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