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Adare, A, Afanasiev, S, Aidala, C, Ajitanand, NN, Akiba, Y, Akimoto, R, Al-Bataineh, H, Alexander, J, Alfred, M, Al-Jamel, A et al (show 664 more authors) , Al-Ta'ani, H, Angerami, A, Aoki, K, Apadula, N, Aphecetche, L, Aramaki, Y, Armendariz, R, Aronson, SH, Asai, J, Asano, H, Aschenauer, EC, Atomssa, ET, Averbeck, R, Awes, TC, Azmoun, B, Babintsev, V, Bagoly, A, Bai, M, Baksay, G, Baksay, L, Baldisseri, A, Bannier, B, Barish, KN, Barnes, PD, Bassalleck, B, Basye, AT, Bathe, S, Batsouli, S, Baublis, V, Bauer, F, Baumann, C, Baumgart, S, Bazilevsky, A, Belikov, S, Belmont, R, Bennett, R, Berdnikov, A, Berdnikov, Y, Bhom, JH, Bickley, AA, Bjorndal, MT, Blau, DS, Boer, M
ORCID: 0000-0001-9157-4349, Boissevain, JG, Bok, JS, Borel, H, Boyle, K, Brooks, ML, Brown, DS, Bryslawskyj, J, Bucher, D, Buesching, H, Bumazhnov, V, Bunce, G, Burward-Hoy, JM, Butsyk, S, Camacho, CM, Campbell, S, Canoa Roman, V, Caringi, A, Castera, P, Chai, J-S, Chang, BS, Chang, WC, Charvet, J-L, Chen, C-H, Chernichenko, S, Chi, CY, Chiba, J, Chiu, M, Choi, IJ, Choi, JB, Choi, S, Choudhury, RK, Christiansen, P, Chujo, T
ORCID: 0000-0001-5433-969X, Chung, P, Churyn, A, Chvala, O, Cianciolo, V, Citron, Z
ORCID: 0000-0003-1831-6452, Cleven, CR, Cobigo, Y, Cole, BA, Comets, MP, Conesa Del Valle, Z, Connors, M, Constantin, P
ORCID: 0000-0001-5368-3819, Csanád, M
ORCID: 0000-0002-3154-6925, Csörgő, T, Dahms, T, Dairaku, S, Danchev, I, Danley, TW, Das, K, Datta, A, Daugherity, MS, David, G, Dayananda, MK, Deaton, MB, Dehmelt, K
ORCID: 0000-0002-3247-1857, Delagrange, H, Denisov, A, d'Enterria, D
ORCID: 0000-0002-5754-4303, Deshpande, A, Desmond, EJ, Dharmawardane, KV, Dietzsch, O, Ding, L, Dion, A, Do, JH, Donadelli, M, D'Orazio, L, Drachenberg, JL, Drapier, O, Drees, A, Drees, KA, Dubey, AK, Durham, JM, Durum, A
ORCID: 0009-0004-9202-7450, Dutta, D, Dzhordzhadze, V, Edwards, S, Efremenko, YV, Egdemir, J, Ellinghaus, F, Emam, WS, Engelmore, T, Enokizono, A, En'yo, H, Espagnon, B, Esumi, S, Eyser, KO
ORCID: 0000-0002-8065-0796, Fadem, B, Fan, W, Feege, N, Fields, DE, Finger, M, Finger, M, Fleuret, F, Fokin, SL
ORCID: 0000-0002-2136-778X, Forestier, B, Fraenkel, Z, Frantz, JE, Franz, A, Frawley, AD, Fujiwara, K, Fukao, Y, Fung, S-Y, Fusayasu, T, Gadrat, S, Gainey, K, Gal, C, Gallus, P, Garg, P, Garishvili, A, Garishvili, I, Gastineau, F, Ge, H, Germain, M
ORCID: 0000-0001-7382-1609, Glenn, A
ORCID: 0000-0002-7752-9872, Gong, H, Gong, X, Gonin, M, Gosset, J, Goto, Y, Granier de Cassagnac, R, Grau, N, Greene, SV, Grim, G, Grosse Perdekamp, M
ORCID: 0000-0002-2711-5217, Gunji, T
ORCID: 0000-0002-6769-599X, Guo, L, Gustafsson, H-Å, Hachiya, T
ORCID: 0000-0001-7544-0156, Hadj Henni, A, Haegemann, C, Haggerty, JS, Hagiwara, MN, Hahn, KI, Hamagaki, H, Hamblen, J, Han, R, Hanks, J, Harada, H, Hartouni, EP, Haruna, K, Harvey, M, Hasegawa, S, Haseler, TOS, Hashimoto, K, Haslum, E, Hasuko, K, Hayano, R, He, X
ORCID: 0000-0002-5534-6039, Heffner, M, Hemmick, TK, Hester, T, Heuser, JM, Hiejima, H, Hill, JC, Hill, K, Hobbs, R, Hodges, A, Hohlmann, M, Hollis, RS, Holmes, M, Holzmann, W, Homma, K, Hong, B
ORCID: 0000-0002-2259-9929, Horaguchi, T, Hori, Y, Hornback, D, Hotvedt, N, Huang, J, Huang, S, Hur, MG, Ichihara, T, Ichimiya, R, Iinuma, H, Ikeda, Y, Imai, K, Imrek, J, Inaba, M, Inoue, Y, Iordanova, A, Isenhower, D, Isenhower, L, Ishihara, M, Isobe, T, Issah, M, Isupov, A, Ivanishchev, D
ORCID: 0000-0003-3298-3702, Iwanaga, Y, Jacak, BV, Javani, M, Ji, Z, Jia, J, Jiang, X, Jin, J, Jinnouchi, O, Johnson, BM, Jones, T, Joo, KS, Jouan, D, Jumper, DS, Kajihara, F, Kametani, S, Kamihara, N, Kamin, J, Kaneta, M, Kaneti, S, Kang, BH, Kang, JH, Kang, JS, Kanou, H, Kapustinsky, J, Karatsu, K, Kasai, M, Kawagishi, T, Kawall, D, Kawashima, M, Kazantsev, AV, Kelly, S, Kempel, T, Khachatryan, V
ORCID: 0000-0003-2567-2930, Khanzadeev, A, Kijima, KM, Kikuchi, J, Kim, A, Kim, BI, Kim, C, Kim, DH, Kim, DJ, Kim, E, Kim, E-J, Kim, HJ, Kim, K-B, Kim, M, Kim, SH, Kim, Y-J, Kim, YK, Kim, Y-S, Kincses, D, Kinney, E, Kiriluk, K, Kiss, Á, Kistenev, E, Kiyomichi, A, Klatsky, J, Klay, J, Klein-Boesing, C, Kleinjan, D, Kline, P, Kochenda, L, Kochetkov, V, Komatsu, Y, Komkov, B, Konno, M, Koster, J, Kotchetkov, D, Kotov, D
ORCID: 0000-0002-3395-0454, Kozlov, A, Král, A, Kravitz, A, Krizek, F, Kroon, PJ, Kubart, J, Kunde, GJ, Kurgyis, B, Kurihara, N, Kurita, K, Kurosawa, M, Kweon, MJ, Kwon, Y, Kyle, GS, Lacey, R, Lai, YS
ORCID: 0000-0002-5610-2327, Lajoie, JG
ORCID: 0000-0001-6472-1905, Layton, D, Lebedev, A, Le Bornec, Y, Leckey, S, Lee, B, Lee, DM, Lee, J, Lee, KB, Lee, KS, Lee, MK, Lee, SH, Lee, SR, Lee, T, Leitch, MJ, Leite, MAL
ORCID: 0000-0003-0392-3663, Leitgab, M, Lenzi, B, Leung, YH, Lewis, B, Lewis, NA, Li, X, Li, X, Li, XH, Lichtenwalner, P, Liebing, P, Lim, H, Lim, SH, Linden Levy, LA, Liška, T
ORCID: 0000-0002-2148-1726, Litvinenko, A, Liu, H, Liu, MX, Lökös, S
ORCID: 0000-0002-4447-4836, Love, B, Lynch, D, Maguire, CF, Majoros, T, Makdisi, YI, Makek, M
ORCID: 0000-0001-7743-2205, Malakhov, A, Malik, MD, Manion, A, Manko, VI, Mannel, E, Mao, Y, Mašek, L, Masui, H, Masumoto, S, Matathias, F, McCain, MC, McCumber, M, McGaughey, PL, McGlinchey, D, McKinney, C, Means, N, Mendoza, M, Meredith, B, Miake, Y, Mibe, T
ORCID: 0000-0001-7057-9175, Mignerey, AC, Mihalik, DE, Mikeš, P, Miki, K, Miller, TE, Milov, A, Mioduszewski, S, Mishra, DK, Mishra, GC, Mishra, M, Mitchell, JT, Mitrovski, M, Mitsuka, G, Miyachi, Y, Miyasaka, S, Mohanty, AK, Mohapatra, S, Moon, HJ, Moon, T, Morino, Y, Morreale, A, Morrison, DP, Morrow, SI, Moss, JM, Motschwiller, S, Moukhanova, TV, Mukhopadhyay, D, Murakami, T, Murata, J
ORCID: 0000-0003-4488-3549, Mwai, A, Nagae, T
ORCID: 0000-0002-7034-8921, Nagamiya, S, Nagashima, K, Nagata, Y, Nagle, JL, Naglis, M, Nagy, MI, Nakagawa, I, Nakamiya, Y, Nakamura, KR, Nakamura, T, Nakano, K, Nam, S, Nattrass, C
ORCID: 0000-0002-8768-6468, Nederlof, A, Newby, J
ORCID: 0000-0003-3571-1067, Nguyen, M, Nihashi, M, Niida, T, Norman, BE, Nouicer, R, Novák, T, Novitzky, N
ORCID: 0000-0002-9609-566X, Nyanin, AS, Nystrand, J, Oakley, C
ORCID: 0000-0002-2724-406X, O'Brien, E, Oda, SX
ORCID: 0000-0001-5836-768X, Ogilvie, CA, Ohnishi, H
ORCID: 0000-0001-9427-1984, Ojha, ID, Oka, M, Okada, K, Omiwade, OO, Onuki, Y, Orjuela Koop, JD, Osborn, JD
ORCID: 0000-0003-0697-7704, Oskarsson, A, Otterlund, I, Ouchida, M, Ozawa, K
ORCID: 0000-0002-6753-9284, Pak, R, Pal, D, Palounek, APT, Pantuev, V, Papavassiliou, V, Park, BH, Park, IH, Park, J, Park, S, Park, SK, Park, WJ, Pate, SF, Patel, L, Patel, M, Pei, H, Peng, J-C, Peng, W, Pereira, H, Perepelitsa, DV, Peresedov, V, Peressounko, D Yu, PerezLara, CE, Petti, R, Pinkenburg, C, Pisani, RP, Proissl, M, Purschke, ML, Purwar, AK, Qu, H, Radzevich, PV
ORCID: 0000-0001-5422-4534, Rak, J, Rakotozafindrabe, A, Ravinovich, I, Read, KF, Rembeczki, S, Reuter, M, Reygers, K, Reynolds, D, Riabov, V, Riabov, Y, Richardson, E, Richford, D, Rinn, T, Roach, D, Roche, G, Rolnick, SD, Romana, A, Rosati, M, Rosen, CA, Rosendahl, SSE, Rosnet, P
ORCID: 0000-0002-6099-7565, Rowan, Z, Rukoyatkin, P, Runchey, J, Ružička, P, Rykov, VL, Ryu, SS, Sahlmueller, B, Saito, N, Sakaguchi, T, Sakai, S, Sakashita, K, Sakata, H, Sako, H, Samsonov, V, Sano, M, Sano, S, Sarsour, M, Sato, HD, Sato, S, Sato, T, Sawada, S
ORCID: 0000-0002-7122-1690, Schmoll, BK, Sedgwick, K, Seele, J, Seidl, R, Semenov, A Yu, Semenov, V, Sen, A, Seto, R, Sharma, D
ORCID: 0000-0001-9872-5250, Shea, TK, Shein, I, Shevel, A, Shibata, T-A, Shigaki, K
ORCID: 0000-0001-8416-8617, Shimomura, M, Shohjoh, T, Shoji, K, Shukla, P, Sickles, A, Silva, CL, Silvermyr, D, Silvestre, C, Sim, KS, Singh, BK, Singh, CP, Singh, V, Skoby, MJ, Skutnik, S, Slunečka, M, Smith, WC
ORCID: 0000-0002-1305-3377, Soldatov, A, Soltz, RA, Sondheim, WE, Sorensen, SP, Sourikova, IV, Staley, F, Stankus, PW, Stenlund, E, Stepanov, M, Ster, A, Stoll, SP, Sugitate, T
ORCID: 0000-0002-3784-5985, Suire, C, Sukhanov, A, Sullivan, JP, Sun, J, Sun, Z, Sziklai, J, Tabaru, T, Takagi, S, Takagui, EM, Takahara, A, Taketani, A, Tanabe, R, Tanaka, KH, Tanaka, Y, Taneja, S, Tanida, K
ORCID: 0000-0002-8255-3746, Tannenbaum, MJ
ORCID: 0000-0002-8840-5314, Tarafdar, S
ORCID: 0000-0002-6601-9359, Taranenko, A
ORCID: 0000-0003-1737-4474, Tarján, P, Tennant, E, Themann, H, Thomas, D, Thomas, TL, Tieulent, R, Todoroki, T
ORCID: 0000-0001-6475-7174, Togawa, M
ORCID: 0000-0002-1128-4200, Toia, A, Tojo, J, Tomášek, L, Tomášek, M, Tomita, Y, Torii, H, Towell, RS, Tram, V-N, Tserruya, I, Tsuchimoto, Y, Tsuji, T, Tuli, SK, Tydesjö, H, Tyurin, N, Ueda, Y, Ujvari, B, Vale, C, Valle, H, van Hecke, HW, Vargyas, M, Vazquez-Zambrano, E, Veicht, A, Velkovska, J, Vértesi, R, Vinogradov, AA, Virius, M, Vossen, A
ORCID: 0000-0003-0983-4936, Vrba, V, Vznuzdaev, E, Wagner, M, Walker, D
ORCID: 0000-0002-1354-4969, Wang, XR, Watanabe, D, Watanabe, K, Watanabe, Y, Watanabe, YS, Wei, F, Wei, R, Wessels, J, White, SN, Willis, N, Winter, D, Wolin, S, Wong, CP, Woody, CL, Wright, RM, Wysocki, M, Xia, B, Xie, W, Xu, C, Xu, Q, Yamaguchi, YL, Yamaura, K, Yang, R, Yanovich, A
ORCID: 0000-0001-5922-3928, Yasin, Z, Ying, J, Yokkaichi, S, Yoo, JH, You, Z, Young, GR, Younus, I, Yu, H, Yushmanov, IE, Zajc, WA, Zaudtke, O, Zelenski, A, Zhang, C, Zharko, S, Zhou, S, Zimamyi, J, Zolin, L, Zou, L and PHENIX Collaboration
(2019)
Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions.
Physical review letters, 123 (2).
022301-.
ISSN 0031-9007, 1079-7114
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Abstract
The PHENIX collaboration presents first measurements of low-momentum (0.4<p_{T}<3 GeV/c) direct-photon yields from Au+Au collisions at sqrt[s_{NN}]=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 sqrt[s_{NN}]=200. Analyzing the photon yield as a function of the experimental observable dN_{ch}/dη reveals that the low-momentum (>1 GeV/c) direct-photon yield dN_{γ}^{dir}/dη is a smooth function of dN_{ch}/dη and can be well described as proportional to (dN_{ch}/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 p_{T} (>5 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.