Beam Energy Dependence of Jet-Quenching Effects in $\mathrm{Au}+\mathrm{Au}$ Collisions at $\sqrt{{s}_{\mathrm{NN}}}=7.7$, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

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dc.citation.articleNumber032301en_US
dc.citation.issueNumber3en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber121en_US
dc.contributor.authorSTAR Collaborationen_US
dc.date.accessioned2019-01-11T21:33:28Zen_US
dc.date.available2019-01-11T21:33:28Zen_US
dc.date.issued2018en_US
dc.description.abstractWe report measurements of the nuclear modification factor RCP for charged hadrons as well as identified π+(−), K+(−), and p(¯p) for Au+Au collision energies of √sNN=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-pT net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton RCP at high pT does depend on the collision energy, neither the proton nor the antiproton RCP at high pT exhibit net suppression at any energy. A study of how the binary collision-scaled high-pT yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement.en_US
dc.identifier.citationSTAR Collaboration. "Beam Energy Dependence of Jet-Quenching Effects in $\mathrm{Au}+\mathrm{Au}$ Collisions at $\sqrt{{s}_{\mathrm{NN}}}=7.7$, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV." <i>Physical Review Letters,</i> 121, no. 3 (2018) American Physical Society: https://doi.org/10.1103/PhysRevLett.121.032301.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.121.032301en_US
dc.identifier.urihttps://hdl.handle.net/1911/105089en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleBeam Energy Dependence of Jet-Quenching Effects in $\mathrm{Au}+\mathrm{Au}$ Collisions at $\sqrt{{s}_{\mathrm{NN}}}=7.7$, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeVen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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