Beam-energy and centrality dependence of direct-photon emission from ultra-relativistic heavy-ion collisions

The PHENIX collaboration presents first measurements of low-momentum ($0.45\(\,GeV/$c$) but when results from different collision energies are compared, an additional $\sqrt{s_{_{NN}}}$-dependent multiplicative factor is needed to describe the integrated-direct-photon yield.

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Veröffentlicht in:	arXiv.org 2019-06
Hauptverfasser:	Alfred, M, Bathe, S, Belikov, S, Brooks, M L, Bumazhnov, V, Butsyk, S, Campbell, S, Caringi, A, Churyn, A, Cianciolo, V, Citron, Z, Cobigo, Y, Constantin, P, Csanád, M, Datta, A, Dayananda, M K, Delagrange, H, Dion, A, Edwards, S, En'yo, H, Esumi, S, estier, B, Fusayasu, T, Greene, S V, Haruna, K, Harvey, M, Holzmann, W, Iinuma, H, Ishihara, M, Isobe, T, Javani, M, Jia, J, Kajihara, F, Kametani, S, Kang, B H, Kikuchi, J, Kim, C, Kim, S H, Kinney, E, Klatsky, J, Kubart, J, Kweon, M J, Lee, K B, Lee, T, Leitch, M J, Leung, Y H, X Li, Lökös, S, Manion, A, Mannel, E, McCumber, M, McGlinchey, D, Meredith, B, Mignerey, A C, Mihalik, D E, Mohanty, A K, Morrow, S I, Nagae, T, Nagata, Y, Nagy, M I, Nakamiya, Y, Nakano, K, Norman, B E, Nyanin, A S, Oakley, C, Ogilvie, C A, Okada, K, Omiwade, O O, Palounek, A P T, Papavassiliou, V, Park, I H, Park, J, Purschke, M L, Radzevich, P V, Reynolds, D, Riabov, Y, Rinn, T, Rowan, Z, Runchey, J, Rykov, V L, Semenov, V, Soldatov, A, Sun, J, Themann, H, Thomas, D, Togawa, M, Tojo, J, Tomášek, M, Tyurin, N, Vazquez-Zambrano, E, Vértesi, R, Vrba, V, Walker, D, Watanabe, D, Watanabe, K, Xia, B, Yasin, Z, Young, G R, H Yu, Zaudtke, O
Format:	Artikel
Sprache:	eng
Schlagworte:	Beams (radiation) Dependence Heavy ions Ionic collisions Large Hadron Collider Momentum Photon emission Physics - High Energy Physics - Experiment Physics - Nuclear Experiment Relativism Relativistic effects Relativistic Heavy Ion Collider Scaling
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Beschreibung
Zusammenfassung:	The PHENIX collaboration presents first measurements of low-momentum ($0.45\(\,GeV/$c$) but when results from different collision energies are compared, an additional $\sqrt{s_{_{NN}}}$-dependent multiplicative factor is needed to describe the integrated-direct-photon yield.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1805.04084