Azimuthal anisotropy of direct photons in Au plus Au collisions at √SNN=200 GeV

  • Abdulameer, N. J.; 
  • Acharya, U.; 
  • Adare, A.; 
  • Aidala, C.; 
  • Ajitanand, N. N.; 
  • ... Hong, B.; 
  • 외 318명
Citations

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초록

The PHENIX experiment at the Relativistic Heavy Ion Collider measured the second Fourier component v(2) of the direct-photon azimuthal anisotropy at midrapidity in Au + Au collisions at root sNN = 200 GeV. The results are presented in 10% wide bins of collision centrality and cover the transverse-momentum range of 1 < p(T) < 20 GeV/c, and are in quantitative agreement with findings published earlier, but provide better granularity and higher p(T) reach. Above a p(T) of 8-10 GeV/c, where hard scattering dominates the direct-photon production, v(2) is consistent with zero. At lower p(T), direct photon v(2) as a function of p(T) is comparable to the pi(0) anisotropy over all centralities, albeit being overall slightly smaller. The results are compared to recent theory calculations that include, in addition to thermal radiation from the quark-gluon plasma and hadron gas, sources of photons from preequilibrium, strong magnetic fields, or radiative hadronization. While the newer theoretical calculations describe the data better than previous models, none of them alone can fully explain the results.

키워드

QUARK-GLUON PLASMA; HEAVY-ION COLLISIONS; PB-PB COLLISIONS; PHENIX; FLOW; PERSPECTIVE
제목
Azimuthal anisotropy of direct photons in Au plus Au collisions at √SNN=200 GeV
저자
Abdulameer, N. J.; Acharya, U.; Adare, A.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Alfred, M.; Antsupov, S.; Apadula, N.; Asano, H.; Azmoun, B.; Babintsev, V; Bai, M.; Bandara, N. S.; Bannier, B.; Bannikov, E.; 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.; Chen, C. -H; Chen, D.; Chiu, M.; Chi, C. Y.; Choi, I. J.; Choi, J. B.; Chujo, T.; Citron, Z.; Connors, M.; Corliss, R.; Csanad, M.; Csorgo, T.; Danley, T. W.; Datta, A.; Daugherity, M. S.; David, G.; DeBlasio, K.; Dehmelt, K.; Denisov, A.; Deshpande, A.; Desmond, E. J.; Dion, A.; Diss, P. B.; Doomra, V; Do, J. H.; 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.; Firak, D.; 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. Grosse; Gunji, T.; Guo, T.; Hachiya, T.; Haggerty, J. S.; Hahn, K. I.; Hamagaki, H.; Hamilton, H. F.; Hanks, J.; Han, S. Y.; 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.; Kasza, G.; Kawall, D.; Kazantsev, A., V; Key, J. A.; Khachatryan, V.; Khanzadeev, A.; Kimelman, B.; Kim, C.; Kim, D. J.; Kim, E. -J; Kim, G. W.; Kim, M.; 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.; Lim, S. H.; Liu, M. X.; Li, X.; Loomis, D. A.; Lynch, D.; Lokos, S.; 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.; 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.; Netrakanti, P. K.; Niida, T.; Nishimura, S.; Nouicer, R.; Novitzky, N.; Novak, T.; Nukazuka, G.; Nyanin, A. S.; O'Brien, E.; Ogilvie, C. A.; Koop, J. D. Orjuela; Orosz, M.; Osborn, 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; Perepelitsa, D., V; Perera, G. D. N.; Peressounko, D. Yu.; Perry, J.; Petti, R.; Pinkenburg, C.; Pinson, R.; Pisani, R. P.; Potekhin, M.; Purschke, M. L.; Rak, J.; 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.; Sahlmueller, B.; Saito, N.; Sakaguchi, T.; Sako, H.; Samsonov, V; Sarsour, M.; Sato, S.; Schaefer, B.; Schmoll, B. K.; Sedgwick, K.; Seidl, R.; Seleznev, A.; 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.; Slunecka, 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.; Tomasek, M.; Towell, C. L.; Towell, R.; Towell, R. S.; Tserruya, I.; Ujvari, B.; van Hecke, H. W.; Velkovska, J.; Virius, M.; Vrba, V.; Wang, X. R.; Wang, Z.; Watanabe, Y.; Watanabe, Y. S.; Wei, F.; White, A. S.; 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.
DOI
10.1103/21nh-lrvx
발행일
2026-08-07
유형
Article
저널명
Physical Review c
권
114
호
2