Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector

A measurement of splitting scales, as defined by the k<inf>T</inf> clustering algorithm, is presented for final states containing a W boson produced in proton–proton collisions at a centre-of-mass energy of 7 TeV. The measurement is based on the full 2010 data sample corresponding to an...

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Autor principal: Aad, G.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14346044_v73_n5_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_14346044_v73_n5_p_Aad2023-10-03T16:14:54Z Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector Aad, G. A measurement of splitting scales, as defined by the k<inf>T</inf> clustering algorithm, is presented for final states containing a W boson produced in proton–proton collisions at a centre-of-mass energy of 7 TeV. The measurement is based on the full 2010 data sample corresponding to an integrated luminosity of 36 pb−1 which was collected using the ATLAS detector at the CERN Large Hadron Collider. Cluster splitting scales are measured in events containing W bosons decaying to electrons or muons. The measurement comprises the four hardest splitting scales in a k<inf>T</inf> cluster sequence of the hadronic activity accompanying the W boson, and ratios of these splitting scales. Backgrounds such as multi-jet and top-quark-pair production are subtracted and the results are corrected for detector effects. Predictions from various Monte Carlo event generators at particle level are compared to the data. Overall, reasonable agreement is found with all generators, but larger deviations between the predictions and the data are evident in the soft regions of the splitting scales. © 2013, CERN for the benefit of the ATLAS collaboration. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346044_v73_n5_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 A measurement of splitting scales, as defined by the k<inf>T</inf> clustering algorithm, is presented for final states containing a W boson produced in proton–proton collisions at a centre-of-mass energy of 7 TeV. The measurement is based on the full 2010 data sample corresponding to an integrated luminosity of 36 pb−1 which was collected using the ATLAS detector at the CERN Large Hadron Collider. Cluster splitting scales are measured in events containing W bosons decaying to electrons or muons. The measurement comprises the four hardest splitting scales in a k<inf>T</inf> cluster sequence of the hadronic activity accompanying the W boson, and ratios of these splitting scales. Backgrounds such as multi-jet and top-quark-pair production are subtracted and the results are corrected for detector effects. Predictions from various Monte Carlo event generators at particle level are compared to the data. Overall, reasonable agreement is found with all generators, but larger deviations between the predictions and the data are evident in the soft regions of the splitting scales. © 2013, CERN for the benefit of the ATLAS collaboration.
format JOUR
author Aad, G.
spellingShingle Aad, G.
Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector
author_facet Aad, G.
author_sort Aad, G.
title Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector
title_short Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector
title_full Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector
title_fullStr Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector
title_full_unstemmed Measurement of k<inf>T</inf> splitting scales in W → ℓν events at √s = 7 TeV with the ATLAS detector
title_sort measurement of k<inf>t</inf> splitting scales in w → ℓν events at √s = 7 tev with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_14346044_v73_n5_p_Aad
work_keys_str_mv AT aadg measurementofkinftinfsplittingscalesinwlneventsats7tevwiththeatlasdetector
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