Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector

First measurements of the W → ℓν and Z/γ * → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at √ s = 7TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W → ℓν and 179 Z/γ * → ℓℓ candidate events selected from a data set corre...

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Autor principal:	Multitudinario:3179
Formato:	JOUR
Materias:	Hadron-Hadron scattering
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_11266708_v2010_n12_p_Multitudinario
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_11266708_v2010_n12_p_Multitudinario
record_format	dspace
spelling	todo:paper_11266708_v2010_n12_p_Multitudinario2023-10-03T16:06:45Z Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector Multitudinario:3179 Hadron-Hadron scattering First measurements of the W → ℓν and Z/γ * → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at √ s = 7TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W → ℓν and 179 Z/γ * → ℓℓ candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb -1 . The measured total W and Z/ γ * -boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are σ tot W · BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and σ tot Z/γ* · BR(Z/ γ * → ℓℓ) = 0.82 ± 0.06 (stat) ± 0.05 (syst) ± 0.09 (lumi) nb (within the invariant mass window 66 < m ℓℓ < 116 GeV). The W/Z cross-section ratio is measured to be 11.7 ± 0.9(stat) ± 0.4(syst). In addition, measurements of the W + and W - production cross sections and of the lepton charge asymmetry are reported. Theoretical predictions based on NNLO QCD calculations are found to agree with the measurements. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11266708_v2010_n12_p_Multitudinario
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Hadron-Hadron scattering
spellingShingle	Hadron-Hadron scattering Multitudinario:3179 Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector
topic_facet	Hadron-Hadron scattering
description	First measurements of the W → ℓν and Z/γ * → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at √ s = 7TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W → ℓν and 179 Z/γ * → ℓℓ candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb -1 . The measured total W and Z/ γ * -boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are σ tot W · BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and σ tot Z/γ* · BR(Z/ γ * → ℓℓ) = 0.82 ± 0.06 (stat) ± 0.05 (syst) ± 0.09 (lumi) nb (within the invariant mass window 66 < m ℓℓ < 116 GeV). The W/Z cross-section ratio is measured to be 11.7 ± 0.9(stat) ± 0.4(syst). In addition, measurements of the W + and W - production cross sections and of the lepton charge asymmetry are reported. Theoretical predictions based on NNLO QCD calculations are found to agree with the measurements.
format	JOUR
author	Multitudinario:3179
author_facet	Multitudinario:3179
author_sort	Multitudinario:3179
title	Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector
title_short	Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector
title_full	Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector
title_fullStr	Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector
title_full_unstemmed	Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector
title_sort	measurement of the w → ℓν and z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 tev with the atlas detector
url	http://hdl.handle.net/20.500.12110/paper_11266708_v2010_n12_p_Multitudinario
work_keys_str_mv	AT multitudinario3179 measurementofthewlnandzgllproductioncrosssectionsinprotonprotoncollisionsats7tevwiththeatlasdetector
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Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at √ s = 7 TeV with the ATLAS detector

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