Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at √s=13 TeV with the ATLAS detector : = Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at [square root]s=13 TeV with the ATLAS detector

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`µ of the lepton, ` (with ` = 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

Angaben zum Objekt

• Weitere Titel: Measurement of the top-quark mass using a leptonic invariant mass in pp collisions at [square root]s=13 TeV with the ATLAS detector
• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch
• Anmerkungen: Journal of high energy physics. - 2023, 6 (2023) , 19, ISSN: 1029-8479

Beteiligte, Orts- und Zeitangaben

• Ereignis: Veröffentlichung
• (wo): Freiburg
• (wer): Universität
• (wann): 2024
• Urheber: ATLAS Collaboration CERN, [Study Group] ; Argyropoulos, Spyridon ; Becherer, Fabian ; Bührer, Felix ; García-Argos, Carlos ; Gargiulo, Simona ; Gugel, Ralf ; Guth, Manuel ; Heidegger, Kim K. ; Heinemann, Beate ; Herten, Gregor ; Hirose, Shigeki ; Hohn, David ; Hönig, Jan Cedric ; Jakobs, Karl ; Jenni, Peter ; Jiggins, Stephen ; Klapdor-Kleingrothaus, Thorwald ; Knue, Andrea ; Köneke, Karsten ; Kuprash, Oleg ; Landgraf, Ulrich ; Lösle, Alena ; Lüdtke, Christian ; Magerl, Veronika ; Megy, Théo ; Mogg, Philipp ; Parzefall, Ulrich ; Roland, Benoit ; Rottler, Benjamin ; Rühr, Frederik ; Rúriková, Zuzana ; Sammel, Dirk ; Sauerburger, Frank ; Schleicher, Katharina E. ; Scholer, Patrick ; Schumacher, Markus ; Sperlich, Dennis ; Weiser, Christian ; Wiik-Fuchs, Liv ; Winter, Benedict T. ; Wollrath, Julian ; Zimmermann, Stephanie ; et al
• Beteiligte Personen und Organisationen: Experimentelle Teilchenphysik

Weitere Informationen

• DOI: 10.1007/jhep06(2023)019
• URN: urn:nbn:de:bsz:25-freidok-2539850
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 25.03.2025, 13:49 MEZ