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| 題名: | Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at sNN =200 GeV |
| 作者: | 彭仁傑;Akimoto, R.;Alexander, J.;Angerami, A.;Aoki, K.;Atomssa, E. T.;Awes, T. C.;Bannier, B.;Bathe, S.;Bazilevsky, A.;Chi, C. Y.;Chung, P.;Dahms, T.;Dehmelt, K.;Dietzsch, O.;Dion, A.;Durham, J. M.;Durum, A.;En'yo, H.;Fadem, B.;Finger, M.;Frantz, J. E.;Fusayasu, T.;Granier de Cassagnac, R.;Grau, N.;Grosse Perdekamp, M.;Hachiya, T.;Hahn, K. I.;Hamagaki, H.;Hasegawa, S.;Haslum, E.;Hayano, R.;He, X.;Hemmick, T. K.;Hornback, D.;Hotvedt, N.;Ichimiya, R.;Imai, K.;Iordanova, A.;Isenhower, D.;Isobe, T.;Kaneti, S.;Kang, B. H.;Karatsu, K.;Key, J. A.;Kim, D. J.;Kim, E.;Kim, K. -B.;Kiriluk, K.;Kleinjan, D.;Kochenda, L.;Konno, M.;Kravitz, A.;Kunde, G. J.;Kurita, K.;Lacey, R.;Lebedev, A.;Lee, J.;Lee, K. S.;Linden Levy, L. A.;McGaughey, P. L.;Means, N.;Meredith, B.;Mohapatra, S.;Motschwiller, S.;Murakami, T.;Mwai, A.;Nguyen, M.;Nouicer, R.;Novák, T.;O'Brien, E.;Orjuela Koop, J. D.;Ouchida, M.;Pantuev, V.;Papavassiliou, V.;Park, B. H.;Park, J. S.;Peressounko, D. Yu;Proissl, M.;Ramson, B. J.;Rolnick, S. D.;Rosen, C. A.;Saito, N.;Sato, T.;Shein, I.;Shimomura, M.;Slunečka, M.;Stenlund, E.;Stoll, S. P.;Sugitate, T.;Tanabe, R.;Tennant, E.;Thomas, T. L.;Tieulent, R.;Todoroki, T.;Towell, R. S.;Vossen, A.;Wei, F.;White, A. S.;Wood, J. P.;Yokkaichi, S. |
| 貢獻者: | 高能與強場物理研究中心 |
| 關鍵詞: | azimuthal;collisions;Fysik;Natural Sciences;Naturvetenskap;photon measurements;Physical Sciences;Relativistic Heavy Ion Collider;Subatomic Physics;Subatom�r fysik |
| 日期: | 2016-12-06 |
| 上傳時間: | 2026-04-23 11:59:38 (UTC+8) |
| 出版者: | American Physical Society;United States: American Physical Society (APS) |
| 摘要: | 摘要： In this paper, the PHENIX experiment at the BNL Relativistic Heavy Ion Collider has measured second- and third-order Fourier coefficients of the azimuthal distributions of direct photons emitted at midrapidity in Au + Au collisions at sNN=200 GeV for various collision centralities. Combining two different analysis techniques, results were obtained in the transverse momentum range of 0.4 < pT < 4.0 GeV/c. At low pT the second-order coefficients, v2, are similar to the ones observed in hadrons. Third-order coefficients, v3, are nonzero and almost independent of centrality. These new results on v2 and v3, combined with previously published results on yields, are compared to model calculations that provide yields and asymmetries in the same framework. Finally, those models are challenged to explain simultaneously the observed large yield and large azimuthal anisotropies.
出版者： United States: American Physical Society (APS)
出版日期： 2016-12-06
出處： Physical review. C, 2016-12, Vol.94 (6)
識別號： ISSN: 2469-9985
識別號： DOI: 10.1103/PhysRevC.94.064901 |
| 顯示於類別: | [高能與強場物理研究中心] 期刊論文
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