prikaz prve stranice dokumenta Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV
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Scientific paper - Original scientific paper
Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV
Physics Letters B, 735 (2014); 127-137. https://doi.org/10.1016/j.physletb.2014.06.028
(STAR Collaboration) Adamczyk, L.; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Zyzak, M.

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Adamczyk, L., Planinić, M., Poljak, N. & Zyzak, M. (2014). Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV. Physics Letters B, 735., 127-137. doi: 10.1016/j.physletb.2014.06.028

Adamczyk, L., et al. "Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV." Physics Letters B, vol. 735, 2014, pp. 127-137. https://doi.org/10.1016/j.physletb.2014.06.028

Adamczyk, L., Mirko Planinić, Nikola Poljak and M. Zyzak. "Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV." Physics Letters B 735 (2014): 127-137. https://doi.org/10.1016/j.physletb.2014.06.028

Adamczyk, L., et al. (2014) 'Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV', Physics Letters B, 735, pp. 127-137. doi: 10.1016/j.physletb.2014.06.028

Adamczyk L, Planinić M, Poljak N, Zyzak M. Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV. Physics Letters B [Internet]. 2014 [cited 2024 December 30];735:127-137. doi: 10.1016/j.physletb.2014.06.028

L. Adamczyk, M. Planinić, N. Poljak and M. Zyzak, "Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV", Physics Letters B, vol. 735, pp. 127-137, 2014. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:161956. [Accessed: 30 December 2024]

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Metadata
Title (english)Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV
AuthorL. Adamczyk
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorM. Zyzak
CollaborationSTAR Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We report measurements of Υ meson production in p + p, d + Au, and Au + Au collisions using the STAR detector at RHIC. We compare the Υ yield to the measured cross section in p + p collisions in order to quantify any modifications of the yield in cold nuclear matter using d+Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p+ p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for Υ (1S + 2S + 3S) in the rapidity range |y| < 1 in d + Au collisions of RdAu = 0.79 ± 0.24(stat.) ± 0.03(syst.) ± 0.10(p + p syst.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au + Au collisions, we measure a nuclear modification factor of R A A = 0.49 ± 0.1(stat.) ± 0.02(syst.) ± 0.06(p + p syst.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state Υ mesons in Au + Au collisions. The additional suppression in Au + Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark–Gluon Plasma. However, understanding the suppression seen in d + Au is still needed before any definitive statements about the nature of the suppression in Au + Au can be made.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysics Letters B
Numberingvol. 735, pp. 127-137
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2014.06.028
URN:NBNurn:nbn:hr:217:161956
Publication2014
Document URLhttps://www.sciencedirect.com/science/article/pii/S0370269314004316
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 3.0 Unported (CC BY 3.0) icon
Public note© 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP3. Received 13 December 2013 . Received in revised form 23 April 2014. Accepted 11 June 2014. Available online 16 June 2014. Published 30 July 2014.
Created on2019-12-02 17:59:25