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Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at root S-NN=2.76 TeV measured with the ATLAS detector

2016-03-28Artigo científico Acesso aberto
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dc.contributor.authorDo Valle Wemans, A.
dc.contributor.authorATLAS Collaboration
dc.contributor.institutionCeFITec – Centro de Física e Investigação Tecnológica
dc.contributor.institutionDF – Departamento de Física
dc.contributor.pblThe American Physical Society
dc.date.accessioned2019-03-21T23:12:02Z
dc.date.available2019-03-21T23:12:02Z
dc.date.issued2016-03-28
dc.description.abstractPrompt photon production in √sNN = 2.76-TeV Pb + Pb collisions has been measured by the ATLAS experiment at the Large Hadron Collider using data collected in 2011 with an integrated luminosity of 0.14 nb−1. Inclusive photon yields, scaled by the mean nuclear thickness function, are presented as a function of collision centrality and transverse momentum in two pseudorapidity intervals, |η| < 1.37 and 1.52 |η| < 2.37. The scaled yields in the two pseudorapidity intervals, as well as the ratios of the forward yields to those at midrapidity, are compared to the expectations from next-to-leading-order perturbative QCD (pQCD) calculations. The measured cross sections agree well with the predictions for proton-proton collisions within statistical and systematic uncertainties. Both the yields and the ratios are also compared to two other pQCD calculations, one which uses the isospin content appropriate to colliding lead nuclei and another which includes nuclear modifications to the nucleon parton distribution functions.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent28
dc.format.extent843358
dc.identifier.doi10.1103/PhysRevC.93.034914
dc.identifier.issn2469-9985
dc.identifier.otherPURE: 2510730
dc.identifier.otherPURE UUID: 9776c959-bd73-4849-b5b9-6ce6f7b4e58c
dc.identifier.otherWOS: 000372800000003
dc.identifier.otherScopus: 84966391989
dc.identifier.otherWOS: 000372800000003
dc.identifier.urihttp://hdl.handle.net/10362/64117
dc.language.isoeng
dc.peerreviewedyes
dc.subjectCROSS-SECTION
dc.subjectP(P)OVER-BAR COLLISIONS
dc.subjectNUCLEAR COLLISIONS
dc.subjectPP COLLISIONS
dc.subjectPROTON
dc.subjectCOLLIDER
dc.subjectQUARK
dc.subjectFLOW
dc.titleCentrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at root S-NN=2.76 TeV measured with the ATLAS detectoren
dc.typejournal article
degois.publication.issue3
degois.publication.titlePhysical Review C
degois.publication.volume93
dspace.entity.typePublication
rcaap.rightsopenAccess

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