학술논문

Nonprompt direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV
Document Type
Working Paper
Author
Acharya, U. A.Adare, A.Aidala, C.Ajitanand, N. N.Akiba, Y.Alfred, M.Apadula, N.Asano, H.Azmoun, B.Babintsev, V.Bai, M.Bandara, N. S.Bannier, B.Barish, K. N.Bathe, S.Bazilevsky, A.Beaumier, M.Beckman, S.Belmont, R.Berdnikov, A.Berdnikov, Y.Bichon, L.Blankenship, B.Blau, D. S.Bok, J. S.Borisov, V.Boyle, K.Brooks, M. L.Bryslawskyj, J.Bumazhnov, V.Campbell, S.Roman, V. CanoaChen, C. -H.Chiu, M.Chi, C. Y.Choi, I. J.Choi, J. B.Chujo, T.Citron, Z.Connors, M.Corliss, R.Morales, Y. CorralesCsanád, M.Csörgő, T.Danley, T. W.Datta, A.Daugherity, M. S.David, G.Dean, C. T.DeBlasio, K.Dehmelt, K.Denisov, A.Deshpande, A.Desmond, E. J.Dion, A.Diss, P. B.Do, J. H.Doomra, V.Drees, A.Drees, K. A.Durham, J. M.Durum, A.Enokizono, A.Esha, R.Fadem, B.Fan, W.Feege, N.Fields, D. E.Finger, Jr., M.Finger, M.Fitzgerald, D.Fokin, S. L.Frantz, J. E.Franz, A.Frawley, A. D.Gallus, P.Gal, C.Garg, P.Ge, H.Giles, M.Giordano, F.Glenn, A.Goto, Y.Grau, N.Greene, S. V.Perdekamp, M. GrosseGunji, T.Guo, T.Hachiya, T.Haggerty, J. S.Hahn, K. I.Hamagaki, H.Hamilton, H. F.Hanks, J.Han, S. Y.Harvey, M.Hasegawa, S.Haseler, T. O. S.Hashimoto, K.Hemmick, T. K.He, X.Hill, J. C.Hodges, A.Hollis, R. S.Homma, K.Hong, B.Hoshino, T.Hotvedt, N.Huang, J.Imai, K.Inaba, M.Iordanova, A.Isenhower, D.Ivanishchev, D.Jacak, B. V.Jezghani, M.Jiang, X.Ji, Z.Johnson, B. M.Jouan, D.Jumper, D. S.Kanda, S.Kang, J. H.Kawall, D.Kazantsev, A. V.Key, J. A.Khachatryan, V.Khanzadeev, A.Khatiwada, A.Kimelman, B.Kim, C.Kim, D. J.Kim, E. -J.Kim, G. W.Kim, M.Kim, T.Kincses, D.Kingan, A.Kistenev, E.Kitamura, R.Klatsky, J.Kleinjan, D.Kline, P.Koblesky, T.Komkov, B.Kotov, D.Kovacs, L.Kurita, K.Kurosawa, M.Kwon, Y.Lajoie, J. G.Larionova, D.Lebedev, A.Lee, S.Lee, S. H.Leitch, M. J.Lewis, N. A.Lim, S. H.Liu, M. X.Li, X.Loomis, D. A.Lynch, D.Lökös, S.Majoros, T.Makdisi, Y. I.Makek, M.Manion, A.Manko, V. I.Mannel, E.McCumber, M.McGaughey, P. L.McGlinchey, D.McKinney, C.Meles, A.Mendoza, M.Mignerey, A. C.Milov, A.Mishra, D. K.Mitchell, J. T.Mitrankova, M.Mitrankov, Iu.Miyasaka, S.Mizuno, S.Mohanty, A. K.Mondal, M. M.Montuenga, P.Moon, T.Morrison, D. P.Moukhanova, T. V.Mulilo, B.Murakami, T.Murata, J.Mwai, A.Nagashima, K.Nagle, J. L.Nagy, M. I.Nakagawa, I.Nakagomi, H.Nakano, K.Nattrass, C.Nelson, S.Netrakanti, P. K.Niida, T.Nishimura, S.Nouicer, R.Novitzky, N.Novák, T.Nukazuka, G.Nyanin, A. S.O'Brien, E.Ogilvie, C. A.Koop, J. D. OrjuelaOsborn, J. D.Oskarsson, A.Ozawa, K.Pak, R.Pantuev, V.Papavassiliou, V.Park, J. S.Park, S.Patel, M.Pate, S. F.Peng, J. -C.Peng, W.Perepelitsa, D. V.Perera, G. D. N.Peressounko, D. Yu.PerezLara, C. E.Perry, J.Petti, R.Pinkenburg, C.Pinson, R.Pisani, R. P.Potekhin, M.Pun, A.Purschke, M. L.Radzevich, P. V.Rak, J.Ramasubramanian, N.Ramson, B. J.Ravinovich, I.Read, K. F.Reynolds, D.Riabov, V.Riabov, Y.Richford, D.Rinn, T.Rolnick, S. D.Rosati, M.Rowan, Z.Rubin, J. G.Runchey, J.Sahlmueller, B.Saito, N.Sakaguchi, T.Sako, H.Samsonov, V.Sarsour, M.Sato, S.Schaefer, B.Schmoll, B. K.Sedgwick, K.Seidl, R.Sen, A.Seto, R.Sett, P.Sexton, A.Sharma, D.Shein, I.Shibata, T. -A.Shigaki, K.Shimomura, M.Shukla, P.Sickles, A.Silva, C. L.Silvermyr, D.Singh, B. K.Singh, C. P.Singh, V.Slunečka, M.Smith, K. L.Snowball, M.Soltz, R. A.Sondheim, W. E.Sorensen, S. P.Sourikova, I. V.Stankus, P. W.Stepanov, M.Stoll, S. P.Sugitate, T.Sukhanov, A.Sumita, T.Sun, J.Sun, Z.Sziklai, J.Taketani, A.Tanida, K.Tannenbaum, M. J.Tarafdar, S.Taranenko, A.Tieulent, R.Timilsina, A.Todoroki, T.Tomášek, M.Towell, C. L.Towell, R.Towell, R. S.Tserruya, I.Ueda, Y.Ujvari, B.van Hecke, H. W.Velkovska, J.Virius, M.Vrba, V.Wang, X. R.Watanabe, Y.Watanabe, Y. S.Wei, F.White, A. S.Wong, C. P.Woody, C. L.Wysocki, M.Xia, B.Xue, L.Yalcin, S.Yamaguchi, Y. L.Yanovich, A.Yoon, I.Yoo, J. H.Yushmanov, I. E.Yu, H.Zajc, W. A.Zelenski, A.Zhou, S.Zou, L.
Source
Phys. Rev. C 109, 044912 (2024)
Subject
Nuclear Experiment
Language
Abstract
The measurement of the direct-photon spectrum from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV is presented by the PHENIX collaboration using the external-photon-conversion technique for 0\%--93\% central collisions in a transverse-momentum ($p_T$) range of 0.8--10 GeV/$c$. An excess of direct photons, above prompt-photon production from hard-scattering processes, is observed for $p_T<6$ GeV/$c$. Nonprompt direct photons are measured by subtracting the prompt component, which is estimated as $N_{\rm coll}$-scaled direct photons from $p$$+$$p$ collisions at 200 GeV, from the direct-photon spectrum. Results are obtained for $0.8Comment: 336 authors from 71 institutions, 26 pages, 30 figures, 4 tabels, 2014 data. v2 is version accepted for publication in Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html