Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV

Adare, A.; ...; Makek, Mihael; ...; Zolin, L.

doi:10.1103/PhysRevC.91.064904

prikaz prve stranice dokumenta Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV

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Scientific paper - Original scientific paper

Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV

Physical Review C - Nuclear Physics, 91 (2015), 6; 064904. https://doi.org/10.1103/PhysRevC.91.064904

(PHENIX Collaboration) Adare, A.; ...; Makek, Mihael; ...; Zolin, L.

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APA 6th Edition

Adare, A., Makek, M. & Zolin, L. (2015). Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV. Physical Review C - Nuclear Physics, 91. (6). doi: 10.1103/PhysRevC.91.064904

MLA 8th Edition

Adare, A., et al. "Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV." Physical Review C - Nuclear Physics, vol. 91, no. 6, 2015. https://doi.org/10.1103/PhysRevC.91.064904

Chicago 17th Edition

Adare, A., Mihael Makek and L. Zolin. "Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV." Physical Review C - Nuclear Physics 91, no. 6 (2015). https://doi.org/10.1103/PhysRevC.91.064904

Harvard

Adare, A., Makek, M. and Zolin, L. (2015) 'Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV', Physical Review C - Nuclear Physics, 91(6). doi: 10.1103/PhysRevC.91.064904

Vancouver

Adare A, Makek M, Zolin L. Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV. Physical Review C - Nuclear Physics [Internet]. 2015 [cited 2024 December 26];91(6). doi: 10.1103/PhysRevC.91.064904

IEEE

A. Adare, M. Makek and L. Zolin, "Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV", Physical Review C - Nuclear Physics, vol. 91, no. 6, 2015. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:956763. [Accessed: 26 December 2024]

Cite this item: https://urn.nsk.hr/urn:nbn:hr:217:956763

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Metadata

Title (english)	Centrality dependence of low-momentum direct-photon production in Au + Au collisions at √sNN = 200 GeV
Author	A. Adare
Author	...
Author	Mihael Makek
Author	...
Author	L. Zolin
Collaboration	PHENIX Collaboration
Author's institution	University of Zagreb Faculty of Science (Department of Physics)
Scientific / art field, discipline and subdiscipline	NATURAL SCIENCES Physics
Abstract (english)	The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au + Au collisions at √sNN = 200 GeV down to p_T = 0.4 GeV/c. Photons are detected via photon conversions to e+e− pairs and an improved technique is applied that minimizes the systematic uncertainties that usually limit direct photon measurements, in particular at low p_T . We find an excess of direct photons above the N_coll-scaled yield measured in p + p collisions. This excess yield is well described by an exponential distribution with an inverse slope of about 240 MeV/c in the p_T range 0.6–2.0 GeV/c. While the shape of the pT distribution is independent of centrality within the experimental uncertainties, the yield increases rapidly with increasing centrality, scaling approximately with N^α_part, where α = 1.38 ± 0.03(stat) ± 0.07(syst).
Keywords (english)
Language	english
Publication type	Scientific paper - Original scientific paper
Publication status	Published
Peer review	Peer review - international
Publication version	Published version
Journal title	Physical Review C - Nuclear Physics
Numbering	vol. 91, no. 6, 064904
p-ISSN	0556-2813
e-ISSN	1089-490X
DOI	https://doi.org/10.1103/PhysRevC.91.064904
URN:NBN	urn:nbn:hr:217:956763
Publication	2015
Document URL	http://link.aps.org/doi/10.1103/PhysRevC.91.064904
Type of resource	Text
Access conditions	Open access
Terms of use
Public note	Copyright (2015) by the American Physical Society. Received 23 May 2014; revised manuscript received 16 March 2015; published 5 June 2015.
Created on	2020-01-11 19:47:36