Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector

A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb −1 data sample of proton–proton collisions at s=7 TeV recorded with the ATLAS detector at the LHC, events consistent with tt¯ production and decay into a single charged lepton final state are reconstructed...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Aad, G.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v728_n_p363_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03702693_v728_n_p363_Aad
record_format dspace
spelling todo:paper_03702693_v728_n_p363_Aad2023-10-03T15:29:34Z Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector Aad, G. A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb −1 data sample of proton–proton collisions at s=7 TeV recorded with the ATLAS detector at the LHC, events consistent with tt¯ production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields Δm≡m t −m t¯ =0.67±0.61(stat)±0.41(syst) GeV, consistent with CPT invariance. © 2013 The Authors JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v728_n_p363_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb −1 data sample of proton–proton collisions at s=7 TeV recorded with the ATLAS detector at the LHC, events consistent with tt¯ production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields Δm≡m t −m t¯ =0.67±0.61(stat)±0.41(syst) GeV, consistent with CPT invariance. © 2013 The Authors
format JOUR
author Aad, G.
spellingShingle Aad, G.
Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector
author_facet Aad, G.
author_sort Aad, G.
title Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector
title_short Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector
title_full Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector
title_fullStr Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector
title_full_unstemmed Measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 TeV using the ATLAS detector
title_sort measurement of the mass difference between top and anti-top quarks in pp collisions at √s=7 tev using the atlas detector
url http://hdl.handle.net/20.500.12110/paper_03702693_v728_n_p363_Aad
work_keys_str_mv AT aadg measurementofthemassdifferencebetweentopandantitopquarksinppcollisionsats7tevusingtheatlasdetector
_version_ 1807320911605399552

Ejemplares similares