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PHENIX measurements of low momentum direct photon radiation

Authors
Khachatryan, VladimirAdare, A.Afanasiev, S.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Al-Bataineh, H.Alexander, J.Alfred, M.Al-Ta'ani, H.Andrieux, VMngearami, A. A.Aoki, K.Apadula, N.Aphecetche, L.Aramaki, Y.Armendariz, R.Aronson, S. H.Asai, J.Asano, H.Aschenauer, E. C.Atomssa, E. T.Averbeck, R.Awes, T. C.Ayuso, C.Azmoun, B.Babintsev, VBagoly, A.Bai, M.Bai, X.Baksay, G.Baksay, L.Baldisseri, A.Bandara, N. S.Bannier, B.Barish, K. N.Barnes, P. D.Bassalleck, B.Basye, A. T.Bathe, S.Batsouli, S.Baublis, VBaumann, C.Baumgart, S.Bazilevsky, A.Beaumier, M.Beckman, S.Belikov, S.Belmont, R.Bennett, R.Berdnikov, A.Berdnikov, Y.Bhom, J. H.Bickley, A. A.Black, D.Blau, D. S.Boer, M.Boissevain, J. G.Bok, J. S.Borel, H.Boyle, K.Brooks, M. L.Bryslawskyj, J.Buesching, H.Bumazhnov, VBunce, G.Butler, C.Butsyk, S.Campbell, S.Roman, V. CanoaCaringi, A.Castera, P.Cervantes, R.Chang, B. S.Charvet, J. L.Chen, C-HChernichenko, S.Chi, C. Y.Chiba, J.Chiu, M.Choi, I. J.Choi, J. B.Choi, S.Choudhury, R. K.Christiansen, P.Chujo, T.Chung, P.Churyn, A.Chvala, O.Cianciolo, VCitron, Z.Cleven, C. R.Cole, B. A.Comets, M. P.del Valle, Z. ConesaConnors, M.Constantin, P.Cronin, N.Crossette, N.Csanad, M.Csorgo, T.Dahms, T.Dairaku, S.Danchev, IDanley, T. W.Das, K.Datta, A.Daugherity, M. S.David, G.Dayananda, M. K.Deaton, M. B.DeBlasio, K.Dehmelt, K.Delagrange, H.Denisov, A.d'Enterria, D.Deshpande, A.Desmond, E. J.Dharmawardane, K., VDietzsch, O.Ding, L.Dion, A.Diss, P. B.Dixit, D.Do, J. H.Donadelli, M.D'Orazio, L.Drapier, O.Drees, A.Drees, K. A.Dubey, A. K.Durum, A.Dutta, D.Dzhordzhadze, VEdwards, S.Efremenko, Y., VEgdemir, J.Elder, T.Ellinghaus, F.Emam, W. S.Engelmore, T.Enokizono, A.Enyo, H.Esumi, S.Eyser, K. O.Fadem, B.Fan, W.Feege, N.Fields, D. E.Finger, M.Finger, M., Jr.Fleuret, F.Fokin, S. L.Fraenkel, Z.Frantz, J. E.Franz, A.Frawley, A. D.Fujiwara, K.Fukao, Y.Fukuda, Y.Fusayasu, T.Gadrat, S.Gainey, K.Gal, C.Gallus, R.Garg, P.Garishvili, A.Garishvili, IGe, H.Giordano, F.Glenn, A.Gong, H.Gong, X.Gonin, M.Gosset, J.Goto, Y.de Cassagnac, R. GranierGrau, N.Greene, S., VGrim, G.Perdekamp, M. GrosseGu, Y.Gunji, T.Guo, L.Guragain, H.Gustafsson, H-AHachiya, T.Henni, A. HadjHaegemann, C.Haggerty, J. S.Hahn, K., IHamagaki, H.Hamblen, J.Hamilton, H. F.Han, R.Han, S. Y.Hanks, J.Harada, H.Hartouni, E. P.Haruna, K.Hasegawa, S.Haseler, T. O. S.Hashimoto, K.Haslum, E.Hayano, R.Hayashi, S.He, X.Heffner, M.Hemmick, T. K.Hester, T.Hiejima, H.Hill, J. C.Hill, K.Hobbs, R.Hodges, A.Hohlmann, M.Hollis, R. S.Holzmann, W.Homma, K.Hong, B.Horaguchi, T.Hori, Y.Hornback, D.Hoshino, T.Hotvedt, N.Huang, J.Huang, S.Ichihara, T.Ichimiya, R.Iinuma, H.Ikeda, Y.Imai, K.Imazu, Y.Imrek, J.Inaba, M.Inoue, Y.Iordanova, A.Isenhower, D.Isenhower, L.Ishihara, M.Isinhue, A.Isobe, T.Issah, M.Isupov, A.Ito, Y.Ivanishchev, D.Iwanaga, Y.Jacak, B., VJavani, M.Jeon, S. J.Jezghani, M.Ji, Z.Jia, J.Jiang, X.Jin, J.Jinnouchi, O.Johnson, B. M.Jones, T.Joo, K. S.Jorjadze, VJouan, D.Jumper, D. S.Kajihara, F.Kametani, S.Kamihara, N.Kamin, J.Kanda, S.Kaneta, M.Kaneti, S.Kang, B. H.Kang, J. H.Kang, J. S.Kanou, H.Kapukchyan, D.Kapustinsky, J.Karatsu, K.Karthas, S.Kasai, M.Kawall, D.Kawashima, M.Kazantsev, A., VKempel, T.Key, J. A.Khachatryan, VKhandai, P. K.Khanzadeev, A.Kijima, K. M.Kikuchi, J.Kim, D. H.Kim, D. J.Kim, E.Kim, E-JKim, G. W.Kim, H. J.Kim, K-BKim, M.Kim, M. H.Kim, Y-JKim, Y. K.Kunelman, B.Kincses, D.Kinney, E.Kiss, A.Kistenev, E.Kitamura, R.Kiyomichi, A.Klatsky, J.Klay, J.Klein-Boesing, C.Kleinjan, D.Kline, P.Koblesky, T.Kochenda, L.Kochetkov, VKofarago, M.Komatsu, Y.Komkov, B.Konno, M.Koster, J.Kotchetkov, D.Kotov, D.Kozlov, A.Kral, A.Kravitz, A.Krizek, F.Kubart, J.Kudo, S.Kunde, G. J.Kurgyis, B.Kurihara, N.Kurita, K.Kurosawa, M.Kweon, M. J.Kwon, Y.Kyle, G. S.Lacey, R.Lallow, E. O.Lebedev, A.Lee, B.Lee, D. M.Lee, G. H.Lee, K. B.Lee, K. S.Lee, M. K.Lee, S.Lee, S. H.Lee, S. R.Lee, T.Leitch, M. J.Leite, M. A. L.Leitgab, M.Lenzi, B.Leung, Y. H.Lewis, B.Lewis, N. A.Li, X.Lichtenwalner, P.Liebing, P.Lim, S. H.Levy, L. A. LindenLiska, T.Litvinenko, A.Liu, H.Liu, L. D.Liu, M. X.Loggins, V-RLokos, S.Lovasz, K.Love, B.Lynch, D.Maguire, C. F.Majoros, T.Makdisi, Y., IMakek, M.Malaev, M.Malakhov, A.Malik, M. D.Manion, A.Manko, V., IMannel, E.Mao, Y.Masek, L.Masuda, H.Masui, H.Masumoto, S.Matathias, F.McCumber, M.McGaughey, P. L.McGlinchey, D.McKinney, C.Means, N.Meles, A.Mendoza, M.Meredith, B.Miake, Y.Mibe, T.Midori, J.Mignerey, A. C.Mihalik, D. E.Mikes, P.Miller, T. E.Milov, A.Mioduszewski, S.Mishra, D. K.Mishra, M.Mitchell, J. T.Mitrovski, M.Mitsuka, G.Miyachi, Y.Miyasaka, S.Mizuno, S.Mohanty, A. K.Mohapatra, S.Montuenga, P.Moon, H. J.Moon, T.Morino, Y.Morreale, A.Morrison, D. P.Morrow, S., IMoskowitz, M.Motschwiller, S.Moukhanova, T., VMukhopadhyay, D.Murakami, T.Murata, J.Mwai, A.Nagae, T.Nagai, K.Nagamiya, S.Nagashima, K.Nagashima, T.Nagata, Y.Nagle, J. L.Naglis, M.Nagy, M., INakagawa, INakagomi, H.Nakamiya, Y.Nakamura, K. R.Nakamura, T.Nakano, K.Nam, S.Nattrass, C.Nederlof, A.Netrakanti, P. K.Newby, J.Nguyen, M.Nihashi, M.Niida, T.Nishimura, S.Norman, B. E.Nouicer, R.Novak, T.Novitzky, N.Novotny, R.Nukariya, A.Nyanin, A. S.Oakley, C.Obayashi, H.O'Brien, E.Oda, S. X.Ogilvie, C. A.Ohnishi, H.Oide, H.Oka, M.Okada, K.Omiwade, O. O.Onuki, Y.Koop, J. D. OrjuelaOsborn, J. D.Oskarsson, A.Ottino, G. J.Ouchida, M.Ozawa, K.Pak, R.Pal, D.Palounek, A. P. T.Pantuev, VPapavassiliou, VPark, B. H.Park, I. H.Park, J. S.Park, S.Park, S. K.Park, W. J.Pate, S. F.Patel, L.Patel, M.Pei, H.Peng, J-CPeng, W.Pereira, H.Perepelitsa, D., VPerera, G. D. N.Peresedov, VPeressounko, D. YuPerezlara, C. E.Perry, J.Petti, R.Phipps, M.Pinkenburg, C.Pinson, R.Pisani, R. P.Proissl, M.Pun, A.Purschke, M. L.Urwar, A. K. P.Qu, H.Radzevich, P., VRak, J.Rakotozafindrabe, A.Ramson, B. J.Ravinovich, IRead, K. F.Rembeczki, S.Reuter, M.Reygers, K.Reynolds, D.Riabov, VRiabov, Y.Richardson, E.Richford, D.Rinn, T.Riveli, N.Roach, D.Roche, G.Rolnick, S. D.Romana, A.Rosati, M.Rosen, C. A.Rosendahl, S. S. E.Rosnet, P.Rowan, Z.Rubin, J. G.Rukoyatkin, P.Runchey, J.Ruzicka, P.Rykov, V. L.Ryu, M. S.Safonov, A. S.Sahlmueller, B.Saito, N.Sakaguchi, T.Sakai, S.Sakashita, K.Sakata, H.Sako, H.Samsonov, VSano, M.Sano, S.Sarsour, M.Sato, K.Sato, S.Sato, T.Sawada, S.Schaefer, B.Schmoll, B. K.Sedgwick, K.Seele, J.Seidl, R.Sekiguchi, Y.Semenov, VSen, A.Seto, R.Sett, P.Sexton, A.Sharma, D.Shaver, A.Shein, IShevel, A.Shibata, T-AShigaki, K.Shimomura, M.Shioya, T.Shoji, K.Shukla, P.Sickles, A.Silva, C. L.Silvermyr, D.Silvestre, C.Sim, K. S.Singh, B. K.Singh, C. P.Singh, VSkoby, M. J.Skolnik, M.Skutnik, S.Slunecka, M.Smith, K. L.Snowball, M.Solano, S.Soldatov, A.Soltz, R. A.Sondheim, W. E.Sorensen, S. P.Sourikova, I., VStaley, F.Stankus, P. W.Steinberg, P.Stenlund, E.Stepanov, M.Ster, A.Stol, S. P.Stone, M. R.Sugitate, T.Suire, C.Sukhanov, A.Sumita, T.Sun, J.Sun, Z.Syed, S.Sziklai, J.Tabaru, T.Takagi, S.Takagui, E. M.Takahara, A.Takeda, A.Taketani, A.Tanabe, R.Tanaka, Y.Taneja, S.Tanida, K.Tannenbaum, M. J.Tarafdar, S.Taranenko, A.Tarjan, P.Tarnai, G.Tennant, E.Themann, H.Thomas, D.Thomas, T. L.Tieulent, R.Timilsina, A.Todoroki, T.Togawa, M.Toia, A.Tojo, J.Tomasek, L.Tomasek, M.Torii, H.Towell, C. L.Towell, R.Towell, R. S.Tram, V-NTserruya, ITsuchimoto, Y.Tsuji, T.Ueda, Y.Ujvari, B.Vale, C.Valle, H.van Hecke, H. W.Vargyas, M.Vazquez-Carson, S.Vazquez-Zambrano, E.Veicht, A.Velkovska, J.Vertesi, R.Vinogradov, A. A.Virius, M.Voas, B.Vossen, A.Vrba, V.Vukman, N.Vznuzdaev, E.Wagner, M.Walker, D.Wang, X. R.Wang, Z.Watanabe, D.Watanabe, K.Watanabe, Y.Watanabe, Y. S.Wei, F.Wei, R.Wessels, J.Whitaker, S.White, A. S.White, S. N.Winter, D.Wolin, S.Wong, C. P.Woody, C. L.Wright, R. M.Wysocki, M.Xia, B.Xie, W.Xu, C.Xu, Q.Xue, L.Yalcin, S.Yamaguchi, Y. L.Yamamoto, H.Yamaura, K.Yang, R.Yanovich, A.Yasin, Z.Yin, P.Ying, J.Yokkaichi, S.Yoo, J. H.Oon, I. Y.Ou, Z. Y.Young, G. R.Younus, IYu, H.Yushmanov, I. E.Zajc, W. A.Zaudtke, O.Zelenski, A.Zhang, C.Zharko, S.Zhou, S.Zimamyi, J.Zolin, L.Zou, L.
Issue Date
2월-2019
Publisher
ELSEVIER
Keywords
Heavy ion collisions; small/large collision systems; direct photons; charged-hadron multiplicities
Citation
NUCLEAR PHYSICS A, v.982, pp.763 - 766
Indexed
SCIE
SCOPUS
Journal Title
NUCLEAR PHYSICS A
Volume
982
Start Page
763
End Page
766
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/67758
DOI
10.1016/j.nuclphysa.2018.09.069
ISSN
0375-9474
Abstract
The versatility of RHIC allowed the PHENIX collaboration to measure low momentum direct photons from small systems, such as p+p, p+A, d+Au at root s(NN) = 200 GeV as well as from large A+A systems, such as Au+Au and Cu+Cu at 200 GeV and Au+Au at 62.4 GeV and 39 GeV. In these measurements PHENIX has discovered a large excess over the scaled p+p yield of direct photons in A+A collisions, and a non-zero excess over the scaled p+p yield in central p+A collisions. Another PHENIX discovery is that at low-p(T) the integrated yield of direct photons, dN(gamma)/dy, from large systems follows a universal scaling as a function of the charged-particle multiplicity, (dN(ch)/d eta)(alpha), with alpha = 1.25. The observed scaling properties of direct photons from these systems show that the photon production yield increases faster than the charged-particle multiplicity.
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