Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector

A measurement is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of s=7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately...

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Detalles Bibliográficos
Autor principal: Aad, G.
Formato: JOUR
Materias:
B-Jet
Cross-section
Standard Model
Z boson
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v706_n4-5_p295_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03702693_v706_n4-5_p295_Aad
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spelling todo:paper_03702693_v706_n4-5_p295_Aad2023-10-03T15:29:12Z Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector Aad, G. B-Jet Cross-section Standard Model Z boson A measurement is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of s=7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately 36 pb -1 . The event selection requires a Z boson decaying into high p T electrons or muons, and at least one b-jet, identified by its displaced vertex, with transverse momentum p T >25 GeV and rapidity |y|<2.1. After subtraction of background processes, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found to be in good agreement with perturbative QCD predictions at next-to-leading order. © 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_v706_n4-5_p295_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 B-Jet
Cross-section
Standard Model
Z boson
spellingShingle B-Jet
Cross-section
Standard Model
Z boson
Aad, G.
Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector
topic_facet B-Jet
Cross-section
Standard Model
Z boson
description A measurement is presented of the inclusive cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of s=7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding to an integrated luminosity of approximately 36 pb -1 . The event selection requires a Z boson decaying into high p T electrons or muons, and at least one b-jet, identified by its displaced vertex, with transverse momentum p T >25 GeV and rapidity |y|<2.1. After subtraction of background processes, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found to be in good agreement with perturbative QCD predictions at next-to-leading order. © 2011 CERN.
format JOUR
author Aad, G.
author_facet Aad, G.
author_sort Aad, G.
title Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector
title_short Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector
title_full Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector
title_fullStr Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector
title_full_unstemmed Measurement of the cross-section for b-jets produced in association with a Z boson at s=7 TeV with the ATLAS detector
title_sort measurement of the cross-section for b-jets produced in association with a z boson at s=7 tev with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_03702693_v706_n4-5_p295_Aad
work_keys_str_mv AT aadg measurementofthecrosssectionforbjetsproducedinassociationwithazbosonats7tevwiththeatlasdetector
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