Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector

Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t¯t system, in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data...

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Autor principal: Aad, G.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v90_n7_p_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_15507998_v90_n7_p_Aad2023-10-03T16:25:03Z Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector Aad, G. Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t¯t system, in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data set corresponds to an integrated luminosity of 4.6 fb -1 , recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton + jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range. Nevertheless, data distributions are softer than predicted for higher values of the mass of the t¯t system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions. © Published by the American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15507998_v90_n7_p_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 Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t¯t system, in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data set corresponds to an integrated luminosity of 4.6 fb -1 , recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton + jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range. Nevertheless, data distributions are softer than predicted for higher values of the mass of the t¯t system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions. © Published by the American Physical Society.
format JOUR
author Aad, G.
spellingShingle Aad, G.
Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
author_facet Aad, G.
author_sort Aad, G.
title Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_short Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_full Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_fullStr Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_full_unstemmed Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_sort measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 tev using the atlas detector
url http://hdl.handle.net/20.500.12110/paper_15507998_v90_n7_p_Aad
work_keys_str_mv AT aadg measurementsofnormalizeddifferentialcrosssectionsforttproductioninppcollisionsats7tevusingtheatlasdetector
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