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W and Z bosons in pp, pPb and PbPb with CMS

Electroweak boson production is an important benchmark process in high-energy heavy-ion collisions at the LHC. W and Z bosons do not participate in the strong interaction and their leptonic decays provide medium-blind probes of the initial state of the collisions. The final results on the W and Z pr...

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Autor principal: Chapon, Emilien
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2016.01.022
http://cds.cern.ch/record/2118686
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author Chapon, Emilien
author_facet Chapon, Emilien
author_sort Chapon, Emilien
collection CERN
description Electroweak boson production is an important benchmark process in high-energy heavy-ion collisions at the LHC. W and Z bosons do not participate in the strong interaction and their leptonic decays provide medium-blind probes of the initial state of the collisions. The final results on the W and Z production in pPb collisions at 5.02 TeV, combining both the muon and electron channels, will be presented. When compared to theory calculations that include nuclear modifications to the parton distributions, data show a clear sensitivity to this type of effects. The final results in PbPb collisions at 2.76 TeV, compared to pp collisions at the same center of mass energy, will also be presented. The centrality dependence confirms the binary scaling of hard probes in heavy-ion collisions, while the differential cross sections points to initial state effects small compared to the statistical precision of the available data.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
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spelling cern-21186862019-09-30T06:29:59Zdoi:10.1016/j.nuclphysa.2016.01.022http://cds.cern.ch/record/2118686engChapon, EmilienW and Z bosons in pp, pPb and PbPb with CMSDetectors and Experimental TechniquesElectroweak boson production is an important benchmark process in high-energy heavy-ion collisions at the LHC. W and Z bosons do not participate in the strong interaction and their leptonic decays provide medium-blind probes of the initial state of the collisions. The final results on the W and Z production in pPb collisions at 5.02 TeV, combining both the muon and electron channels, will be presented. When compared to theory calculations that include nuclear modifications to the parton distributions, data show a clear sensitivity to this type of effects. The final results in PbPb collisions at 2.76 TeV, compared to pp collisions at the same center of mass energy, will also be presented. The centrality dependence confirms the binary scaling of hard probes in heavy-ion collisions, while the differential cross sections points to initial state effects small compared to the statistical precision of the available data.CMS-CR-2015-370oai:cds.cern.ch:21186862015-12-20
spellingShingle Detectors and Experimental Techniques
Chapon, Emilien
W and Z bosons in pp, pPb and PbPb with CMS
title W and Z bosons in pp, pPb and PbPb with CMS
title_full W and Z bosons in pp, pPb and PbPb with CMS
title_fullStr W and Z bosons in pp, pPb and PbPb with CMS
title_full_unstemmed W and Z bosons in pp, pPb and PbPb with CMS
title_short W and Z bosons in pp, pPb and PbPb with CMS
title_sort w and z bosons in pp, ppb and pbpb with cms
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/j.nuclphysa.2016.01.022
http://cds.cern.ch/record/2118686
work_keys_str_mv AT chaponemilien wandzbosonsinppppbandpbpbwithcms