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Measurement of the top quark mass in the t¯t → dilepton channel from √s = 8 TeV ATLAS data

Document type: Articulo

Abstract

The top quark mass is measured in the t¯t → dilepton channel (lepton = e, μ) using ATLAS data recorded in the year 2012 at the LHC. The data were taken at a proton–proton centre-of-mass energy of √s = 8TeV and correspond to an integrated luminosity of about 20.2 fb-1. Exploiting the template method, and using the distribution of invariant masses of lepton–b-jet pairs, the top quark mass is measured to be mtop = 172.99 ±0.41 (stat) ±0.74 (syst) GeV, with a total uncertainty of 0.84 GeV. Finally, a combination with previous ATLAS mtop measurements from s = 7 TeV data in the t¯t → dilepton and t¯t → lepton + jets channels results in mtop = 172.84 ± 0.34 (stat) ±0.61 (syst) GeV, with a total uncertainty of 0.70 GeV.

General information

Issue date: 24 de agosto de 2016
Document language: English
Journal: Physics Letters B; vol. 761
Origin: Facultad de Ciencias Exactas
ISSN: 0370-2693
Pages: 35-371
xmlui.dri2xhtml.METS-1.0.item-dc-subject: top quark ; leptons ; proton-proton collisions
Subjects: Ciencias Exactas ; Física

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Created: 4 de septiembre de 2019
Available since: 4 de septiembre de 2019
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/80430
  • https://doi.org/10.1016/j.physletb.2016.08.042

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    Creative Commons Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International (CC BY 4.0)