- Main
Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions.
- Author(s): Adare, A;
- Afanasiev, S;
- Aidala, C;
- Ajitanand, NN;
- Akiba, Y;
- Akimoto, R;
- Al-Bataineh, H;
- Alexander, J;
- Alfred, M;
- Al-Jamel, A;
- 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;
- 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;
- Chung, P;
- Churyn, A;
- Chvala, O;
- Cianciolo, V;
- Citron, Z;
- Cleven, CR;
- Cobigo, Y;
- Cole, BA;
- Comets, MP;
- Conesa Del Valle, Z;
- Connors, M;
- Constantin, P;
- Csanád, M;
- Csörgő, T;
- Dahms, T;
- Dairaku, S;
- Danchev, I;
- Danley, TW;
- Das, K;
- Datta, A;
- Daugherity, MS;
- David, G;
- Dayananda, MK;
- Deaton, MB;
- Dehmelt, K;
- Delagrange, H;
- Denisov, A;
- d'Enterria, D;
- Deshpande, A;
- Desmond, EJ;
- Dharmawardane, KV;
- Dietzsch, O;
- Ding, L;
- Dion, A;
- Do, JH;
- Donadelli, M;
- D'Orazio, L;
- Drachenberg, JL;
- Drapier, O;
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- Dubey, AK;
- Durham, JM;
- Durum, A;
- 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;
- Fadem, B;
- Fan, W;
- Feege, N;
- Fields, DE;
- Finger, M;
- Finger, M;
- Fleuret, F;
- Fokin, SL;
- Forestier, B;
- Fraenkel, Z;
- Frantz, JE;
- Franz, A;
- Frawley, AD;
- Fujiwara, K;
- Fukao, Y;
- Fung, S-Y;
- Fusayasu, T;
- Gadrat, S;
- Gainey, K;
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- Germain, M;
- Glenn, A;
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- Hadj Henni, A;
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- Hagiwara, MN;
- Hahn, KI;
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- Hamblen, J;
- Han, R;
- Hanks, J;
- Harada, H;
- Hartouni, EP;
- Haruna, K;
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- Hasegawa, S;
- Haseler, TOS;
- Hashimoto, K;
- Haslum, E;
- Hasuko, K;
- Hayano, R;
- He, X;
- Heffner, M;
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- Hester, T;
- Heuser, JM;
- Hiejima, H;
- Hill, JC;
- Hill, K;
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- Hohlmann, M;
- Hollis, RS;
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- Holzmann, W;
- Homma, K;
- Hong, B;
- 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;
- 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;
- 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;
- 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;
- Lajoie, JG;
- 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;
- 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;
- Litvinenko, A;
- Liu, H;
- Liu, MX;
- Lökös, S;
- Love, B;
- Lynch, D;
- Maguire, CF;
- Majoros, T;
- Makdisi, YI;
- Makek, M;
- 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;
- 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;
- Mwai, A;
- Nagae, T;
- Nagamiya, S;
- Nagashima, K;
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- Nagle, JL;
- Naglis, M;
- Nagy, MI;
- Nakagawa, I;
- Nakamiya, Y;
- Nakamura, KR;
- Nakamura, T;
- Nakano, K;
- Nam, S;
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- Nederlof, A;
- Newby, J;
- Nguyen, M;
- Nihashi, M;
- Niida, T;
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- Nouicer, R;
- Novák, T;
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- Nystrand, J;
- Oakley, C;
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- Ojha, ID;
- Oka, M;
- Okada, K;
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- Onuki, Y;
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- Osborn, JD;
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- Otterlund, I;
- Ouchida, M;
- Ozawa, K;
- Pak, R;
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- 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;
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- Ying, J;
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- Yoo, JH;
- You, Z;
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- Younus, I;
- Yu, H;
- Yushmanov, IE;
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- PHENIX Collaboration
- et al.
Published Web Location
https://doi.org/10.1103/physrevlett.123.022301Abstract
The PHENIX collaboration presents first measurements of low-momentum (0.41 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.
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