Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS

A measurement of the production cross section of top quark pairs (tt̄) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energ...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Aad, G.
Formato: JOUR
Materias:
Heavy quark production
Top physics
Total cross section
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v707_n5_p459_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03702693_v707_n5_p459_Aad
record_format dspace
spelling todo:paper_03702693_v707_n5_p459_Aad2023-10-03T15:29:14Z Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS Aad, G. Heavy quark production Top physics Total cross section A measurement of the production cross section of top quark pairs (tt̄) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. Using a data sample corresponding to an integrated luminosity of 35pb -1 , a tt̄ production cross section σtt̄=177±20(stat.)±14(syst.)±7(lum.)pb is measured for an assumed top quark mass of m t =172.5GeV. A second measurement requiring at least one jet identified as coming from a b quark yields a comparable result, demonstrating that the dilepton final states are consistent with being accompanied by b-quark jets. These measurements are in good agreement with Standard Model predictions. © 2011 CERN. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v707_n5_p459_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Heavy quark production
Top physics
Total cross section
spellingShingle Heavy quark production
Top physics
Total cross section
Aad, G.
Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS
topic_facet Heavy quark production
Top physics
Total cross section
description A measurement of the production cross section of top quark pairs (tt̄) in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the Large Hadron Collider is reported. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. Using a data sample corresponding to an integrated luminosity of 35pb -1 , a tt̄ production cross section σtt̄=177±20(stat.)±14(syst.)±7(lum.)pb is measured for an assumed top quark mass of m t =172.5GeV. A second measurement requiring at least one jet identified as coming from a b quark yields a comparable result, demonstrating that the dilepton final states are consistent with being accompanied by b-quark jets. These measurements are in good agreement with Standard Model predictions. © 2011 CERN.
format JOUR
author Aad, G.
author_facet Aad, G.
author_sort Aad, G.
title Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS
title_short Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS
title_full Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS
title_fullStr Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS
title_full_unstemmed Measurement of the top quark pair production cross section in pp collisions at √s=7TeV in dilepton final states with ATLAS
title_sort measurement of the top quark pair production cross section in pp collisions at √s=7tev in dilepton final states with atlas
url http://hdl.handle.net/20.500.12110/paper_03702693_v707_n5_p459_Aad
work_keys_str_mv AT aadg measurementofthetopquarkpairproductioncrosssectioninppcollisionsats7tevindileptonfinalstateswithatlas
_version_ 1782026795561779200

Ejemplares similares