Nuclear modification factors of phi mesons in d plus Au, Cu plus Cu, and Au plus Au collisions at root s(NN)=200 GeV Adare, Andrew Belikov, Sergey Constantin, Paul Dion, Alan Grau, Nathan Hill, John Kempel, Todd Lajoie, John Lebedev, Alexandre Ogilvie, Craig Pei, H. Rak, Jan Rosati, Marzia Silva, C. Skutnik, S. Vale, Carla Wei, Feng et al.
dc.contributor.department Physics and Astronomy 2018-02-18T13:10:02.000 2020-06-30T06:18:27Z 2020-06-30T06:18:27Z Sat Jan 01 00:00:00 UTC 2011 2011-02-18
dc.description.abstract <p>The PHENIX experiment at the Relativistic Heavy Ion Collider has performed systematic measurements of phi meson production in the K+K- decay channel at midrapidity in p + p, d + Au, Cu + Cu, and Au + Au collisions at root s(NN) = 200 GeV. Results are presented on the phi invariant yield and the nuclear modification factor R-AA for Au + Au and Cu + Cu, and R-dA for d + Au collisions, studied as a function of transverse momentum (1 < p(T) < 7 GeV/c) and centrality. In central and midcentral Au + Au collisions, the R-AA of phi exhibits a suppression relative to expectations from binary scaled p + p results. The amount of suppression is smaller than that of the pi(0) and the. in the intermediate p(T) range (2-5 GeV/c), whereas, at higher p(T), the phi, pi(0), and. show similar suppression. The baryon (proton and antiproton) excess observed in central Au + Au collisions at intermediate p(T) is not observed for the phi meson despite the similar masses of the proton and the phi. This suggests that the excess is linked to the number of valence quarks in the hadron rather than its mass. The difference gradually disappears with decreasing centrality, and, for peripheral collisions, the R-AA values for both particle species are consistent with binary scaling. Cu + Cu collisions show the same yield and suppression as Au + Au collisions for the same number of N-part. The R-dA of phi shows no evidence for cold nuclear effects within uncertainties.</p>
dc.description.comments <p>This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander et al. "Nuclear modification factors of ϕ mesons in d+ Au, Cu+ Cu, and Au+ Au collisions at s NN= 200 GeV." <em>Physical Review C</em> 83, no. 2 (2011): 024909. DOI:<a href="" target="_blank">10.1103/PhysRevC.83.024909</a>. Posted with permission.</p>
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dc.identifier archive/
dc.identifier.articleid 1301
dc.identifier.contextkey 10246761
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath physastro_pubs/287
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 23:11:57 UTC 2022
dc.source.uri 10.1103/PhysRevC.83.024909
dc.subject.disciplines Elementary Particles and Fields and String Theory
dc.subject.disciplines Nuclear
dc.subject.disciplines Physics
dc.title Nuclear modification factors of phi mesons in d plus Au, Cu plus Cu, and Au plus Au collisions at root s(NN)=200 GeV
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 0c7465f3-a076-4319-9513-6cd51186bbf6
relation.isOrgUnitOfPublication 4a05cd4d-8749-4cff-96b1-32eca381d930
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