A precise measurement of the Z-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at √s = 8 TeV

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dc.article.number315
dc.catalogadorpau
dc.contributor.authorAbusleme Hoffman, Ángel Christian
dc.contributor.authorDíaz, Marco A.
dc.contributor.authorGaray Walls, Francisca
dc.contributor.otherATLAS Collaboration
dc.date.accessioned2024-04-02T15:28:19Z
dc.date.available2024-04-02T15:28:19Z
dc.date.issued2024
dc.date.updated2024-03-31T01:03:57Z
dc.description.abstractThis paper presents for the first time a precise measurement of the production properties of the Z boson in the full phase space of the decay leptons. This is in contrast to the many previous precise unfolded measurements performed in the fiducial phase space of the decay leptons. The measurement is obtained from proton–proton collision data collected by the ATLAS experiment in 2012 at √s = 8 TeV at the LHC and corresponding to an integrated luminosity of 20.2 fb−1. The results, based on a total of 15.3 million Zboson decays to electron and muon pairs, extend and improve a previous measurement of the full set of angular coefficients describing Z-boson decay. The double-differential crosssection distributions in Z-boson transverse momentum pT and rapidity y are measured in the pole region, defined as 80 < m < 100 GeV, over the range |y| < 3.6. The totaluncertainty of the normalised cross-section measurements in the peak region of the pT distribution is dominated by statistical uncertainties over the full range and increases as a function of rapidity from 0.5–1.0% for |y| < 2.0 to 2 − 7% at higher rapidities. The results for the rapidity-dependenttransverse momentum distributions are compared to stateof-the-art QCD predictions, which combine in the best cases approximate N4LL resummation with N3LO fixed-order perturbative calculations. The differential rapidity distributions integrated over pT are even more precise, with accuracies from 0.2–0.3% for |y| < 2.0 to 0.4–0.9% at higher rapidities, and are compared to fixed-order QCD predictions using the most recent parton distribution functions. The agreementbetween data and predictions is quite good in most cases.
dc.fechaingreso.objetodigital2024-04-02
dc.format.extent41 páginas
dc.identifier.citationThe European Physical Journal C. 2024 Mar 25;84(3):315
dc.identifier.doi10.1140/epjc/s10052-024-12438-w
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-024-12438-w
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/84886
dc.information.autorucEscuela de Ingeniería; Abusleme Hoffman, Ángel Christian; 0000-0003-0762-7204; 2698
dc.information.autorucInstituto de Física; Díaz, Marco A.; S/I; 104746
dc.information.autorucInstituto de Física; Garay Walls, Francisca; 0000-0002-6670-1104; 131813
dc.issue.numero84
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaThe European Physical Journal C
dc.rightsacceso abierto
dc.rights.holderCERN for the benefit of The ATLAS Collaboration
dc.titleA precise measurement of the Z-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at √s = 8 TeV
dc.typeartículo
sipa.codpersvinculados2698
sipa.codpersvinculados104746
sipa.codpersvinculados131813
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