prikaz prve stranice dokumenta Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions
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Scientific paper - Original scientific paper
Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions
Physical Review Letters, 123 (2018), 2; 022301. https://doi.org/10.1103/PhysRevLett.123.022301
(PHENIX Collaboration) Adare, A.; ...; Makek, Mihael; ...; Zou, L.

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Adare, A., Makek, M. & Zou, L. (2018). Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions. Physical Review Letters, 123. (2). doi: 10.1103/PhysRevLett.123.022301

Adare, A., et al. "Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions." Physical Review Letters, vol. 123, no. 2, 2018. https://doi.org/10.1103/PhysRevLett.123.022301

Adare, A., Mihael Makek and L. Zou. "Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions." Physical Review Letters 123, no. 2 (2018). https://doi.org/10.1103/PhysRevLett.123.022301

Adare, A., Makek, M. and Zou, L. (2018) 'Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions', Physical Review Letters, 123(2). doi: 10.1103/PhysRevLett.123.022301

Adare A, Makek M, Zou L. Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions. Physical Review Letters [Internet]. 2018 [cited 2025 March 26];123(2). doi: 10.1103/PhysRevLett.123.022301

A. Adare, M. Makek and L. Zou, "Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions", Physical Review Letters, vol. 123, no. 2, 2018. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:689890. [Accessed: 26 March 2025]

Metadata
Title (english)Beam Energy and Centrality Dependence of Direct- Photon Emission from Ultrarelativistic Heavy-Ion Collisions
AuthorA. Adare
Author
...
AuthorMihael Makek
MBZ: 256122
Author
...
AuthorL. Zou
CollaborationPHENIX Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The PHENIX collaboration presents first measurements of low-momentum (0.4<pT<3 GeV/c) direct-photon yields from Au+Au collisions at √sNN=39 and 62.4 GeV. For both beam energies the direct-photon yields are substantially enhanced with respect to expectations from prompt processes, similar to the yields observed in Au+Au collisions at √sNN=200. Analyzing the photon yield as a function of the experimental observable dNch/dη reveals that the low-momentum (>1 GeV/c) direct-photon yield... More dNγdir/dη is a smooth function of dNch/dη and can be well described as proportional to (dNch/dη)α with α≈1.25. This scaling behavior holds for a wide range of beam energies at the Relativistic Heavy Ion Collider and the Large Hadron Collider, for centrality selected samples, as well as for different A+A collision systems. At a given beam energy, the scaling also holds for high pT (>5 GeV/c), but when results from different collision energies are compared, an additional √sNN-dependent multiplicative factor is needed to describe the integrated- direct-photon yield. Less
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 123, no. 2, 022301
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.123.022301
URN:NBNurn:nbn:hr:217:689890
Publication2018
Document URLhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.022301
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public notePublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 15 May 2018. Revised 27 April 2019. Published 10 July 2019.
Created on2020-08-24 13:11:00
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