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dc.contributor.authorPHENIX Collaboration
dc.date.accessioned2019-07-30T08:24:06Z
dc.date.available2019-07-30T08:24:06Z
dc.date.issued2019
dc.identifier.citationPHENIX Collaboration. (2019). Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions. <i>Physical Review Letters</i>, <i>123</i>(2), Article 022301. <a href="https://doi.org/10.1103/PhysRevLett.123.022301" target="_blank">https://doi.org/10.1103/PhysRevLett.123.022301</a>
dc.identifier.otherCONVID_32167083
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/65158
dc.description.abstractThe PHENIX collaboration presents first measurements of low-momentum (0.41  GeV/c) direct-photon yield dNdirγ/dη is a smooth function of dNch/dη and can be well described as proportional to (dNch/dη)α with α≈1.25. This scaling behavior holds for a wide range of beam energies at the Relativistic Heavy Ion Collider and the Large Hadron Collider, for centrality selected samples, as well as for different A+A collision systems. At a given beam energy, the scaling also holds for high pT (>5  GeV/c), but when results from different collision energies are compared, an additional √sNN-dependent multiplicative factor is needed to describe the integrated-direct-photon yield.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Letters
dc.rightsCC BY 4.0
dc.titleBeam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201907303719
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.relation.issn0031-9007
dc.relation.numberinseries2
dc.relation.volume123
dc.type.versionpublishedVersion
dc.rights.copyright© PHENIX Collaboration, 2019.
dc.rights.accesslevelopenAccessfi
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1103/PhysRevLett.123.022301


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