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Cold-nuclear-matter effects on heavy-quark production in d+Au collisions at √s.sub.NN./sub.=200 GeV
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SYSNO ASEP 0390054 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Cold-nuclear-matter effects on heavy-quark production in d+Au collisions at √sNN=200 GeV Author(s) Adare, A. (US)
Aidala, C. (US)
Ajitanand, N.N. (US)
Růžička, Pavel (FZU-D)
Tomášek, Lukáš (FZU-D) RID, ORCID
Vrba, Václav (FZU-D) RID, ORCIDNumber of authors 376 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 109, č. 24 (2012), "242301-1"-"242301-11"Number of pages 11 s. Language eng - English Country US - United States Keywords PHENIX ; RHIC ; nucleus shadowing ; rapidity dependence ; fragmentation ; J/psi ; Upsilon ; heavy ion Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100502 - FZU-D (2005-2011) UT WOS 000312299500002 DOI 10.1103/PhysRevLett.109.242301 Annotation The three Upsilon states, Upsilon(1S+2S+3S), are measured in d+Au and p+p collisions at sqrt(s_NN)=200 GeV and rapidities 1.2<|y|<2.2 by the PHENIX experiment at the Relativistic Heavy-Ion Collider. Cross sections for the inclusive Upsilon(1S+2S+3S) production are obtained. The inclusive yields per binary collision for d+Au collisions relative to those in p+p collisions (R_dAu) are found to be 0.62 +/- 0.26 (stat) +/- 0.13 (syst) in the gold-going direction and 0.91 +/- 0.33 (stat) +/- 0.16 (syst) in the deuteron-going direction. The measured results are compared to a nuclear-shadowing model, EPS09 [JHEP 04, 065 (2009)], combined with a final-state breakup cross section, sigma_br, and compared to lower energy p+A results. We also compare the results to the PHENIX J/psi results [Phys. Rev. Lett. 107, 142301 (2011)]. The rapidity dependence of the observed Upsilon suppression is consistent with lower energy p+A measurements. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2013
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