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Heavy-quark production and elliptic flow in Au plus Au collisions at root(NN)-N-S=62.4 GeV

Title
Heavy-quark production and elliptic flow in Au plus Au collisions at root(NN)-N-S=62.4 GeV
Authors
Adare, A.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Al-Ta'ani, H.Alexander, J.Angerami, A.Aoki, K.Apadula, N.Aramaki, Y.Asano, H.Aschenauer, E. C.Atomssa, E. T.Awes, T. C.Azmoun, B.Babintsev, V.Bai, M.Bannier, B.Barish, K. N.Bassalleck, B.Bathe, S.Baublis, V.Baumgart, S.Bazilevsky, A.Belmont, R.Berdnikov, A.Berdnikov, Y.Bing, X.Blau, D. S.Bok, J. S.Boyle, K.Brooks, M. L.Buesching, H.Bumazhnov, V.Butsyk, S.Campbell, S.Castera, P.Chen, C. -H.Chi, C. Y.Chiu, M.Choi, I. J.Choi, J. B.Choi, S.Choudhury, R. K.Christiansen, P.Chujo, T.Chvala, O.Cianciolo, V.Citron, Z.Cole, B. A.Connors, M.Csanad, M.Csoergo, T.Dairaku, S.Datta, A.Daugherity, M. S.David, G.Denisov, A.Deshpande, A.Desmond, E. J.Dharmawardane, K. V.Dietzsch, O.Ding, L.Dion, A.Donadelli, M.Drapier, O.Drees, A.Drees, K. A.Durham, J. M.Durum, A.D'Orazio, L.Edwards, S.Efremenko, Y. V.Engelmore, T.Enokizono, A.Esumi, S.Eyser, K. O.Fadem, B.Fields, D. E.Finger, M.Finger, M., Jr.Fleuret, F.Fokin, S. L.Frantz, J. E.Franz, A.Frawley, A. D.Fukao, Y.Fusayasu, T.Gainey, K.Gal, C.Garishvili, A.Garishvili, I.Glenn, A.Gong, X.Gonin, M.Goto, Y.de Cassagnac, R. GranierGrau, N.Greene, S. V.Perdekamp, M. GrosseGunji, T.Guo, L.Gustafsson, H. -A.Hachiya, T.Haggerty, J. S.Hahn, K. I.Hamagaki, H.Hanks, J.Hashimoto, K.Haslum, E.Hayano, R.He, X.Hemmick, T. K.Hester, T.Hill, J. C.Hollis, R. S.Homma, K.Hong, B.Horaguchi, T.Hori, Y.Huang, S.Ichihara, T.Iinuma, H.Ikeda, Y.Imrek, J.Inaba, M.Iordanova, A.Isenhower, D.Issah, M.Ivanishchev, D.Jacak, B. V.Javani, M.Jia, J.Jiang, X.Johnson, B. M.Joo, K. S.Jouan, D.Jumper, D. S.Kamin, J.Kaneti, S.Kang, B. H.Kang, J. H.Kang, J. S.Kapustinsky, J.Karatsu, K.Kasai, M.Kawall, D.Kazantsev, A. V.Kempel, T.Khanzadeev, A.Kijima, K. M.Kim, B. I.Kim, C.Kim, D. J.Kim, E. -J.Kim, H. J.Kim, K. -B.Kim, Y. -J.Kim, Y. K.Kinney, E.Kiss, A.Kistenev, E.Klatsky, J.Kleinjan, D.Kline, P.Komatsu, Y.Komkov, B.Koster, J.Kotchetkov, D.Kotov, D.Kral, A.Krizek, F.Kunde, G. J.Kurita, K.Kurosawa, M.Kwon, Y.Kyle, G. S.Lacey, R.Lai, Y. S.Lajoie, J. G.Lebedev, A.Lee, B.Lee, D. M.Lee, J.Lee, K. B.Lee, K. S.Lee, S. H.Lee, S. R.Leitch, M. J.Leite, M. A. L.Leitgab, M.Lewis, B.Lim, S. H.Levy, L. A. LindenLiu, M. X.Love, B.Maguire, C. F.Makdisi, Y. I.Makek, M.Manion, A.Manko, V. I.Mannel, E.Masumoto, S.McCumber, M.McGaughey, P. L.McGlinchey, D.McKinney, C.Mendoza, M.Meredith, B.Miake, Y.Mibe, T.Mignerey, A. C.Milov, A.Mishra, D. K.Mitchell, J. T.Miyachi, Y.Miyasaka, S.Mohanty, A. K.Moon, H. J.Morrison, D. P.Motschwiller, S.Moukhanova, T. V.Murakami, T.Murata, J.Nagae, T.Nagamiya, S.Nagle, J. L.Nagy, M. I.Nakagawa, I.Nakamiya, Y.Nakamura, K. R.Nakamura, T.Nakano, K.Nattrass, C.Nederlof, A.Nihashi, M.Nouicer, R.Novitzky, N.Nyanin, A. S.O'Brien, E.Ogilvie, C. A.Okada, K.Oskarsson, A.Ouchida, M.Ozawa, K.Pak, R.Pantuev, V.Papavassiliou, V.Park, B. H.Park, I. H.Park, S. K.Pate, S. F.Patel, L.Pei, H.Peng, J. -C.Pereira, H.Peressounko, D. Yu.Petti, R.Pinkenburg, C.Pisani, R. P.Proissl, M.Purschke, M. L.Qu, H.Rak, J.Ravinovich, I.Read, K. F.Reynolds, D.Riabov, V.Riabov, Y.Richardson, E.Riveli, N.Roach, D.Roche, G.Rolnick, S. D.Rosati, M.Sahlmueller, B.Saito, N.Sakaguchi, T.Samsonov, V.Sano, M.Sarsour, M.Sawada, S.Sedgwick, K.Seidl, R.Sen, A.Seto, R.Sharma, D.Shein, I.Shibata, T. -A.Shigaki, K.Shimomura, M.Shoji, K.Shukla, P.Sickles, A.Silva, C. L.Silvermyr, D.Sim, K. S.Singh, B. K.Singh, C. P.Singh, V.Slunecka, M.Soltz, R. A.Sondheim, W. E.Sorensen, S. P.Soumya, M.Sourikova, I. V.Stankus, P. W.Stenlund, E.Stepanov, M.Ster, A.Stoll, S. P.Sugitate, T.Sukhanov, A.Sun, J.Sziklai, J.Takagui, E. M.Takahara, A.Taketani, A.Tanaka, Y.Taneja, S.Tanida, K.Tannenbaum, M. J.Tarafdar, S.Taranenko, A.Tennant, E.Themann, H.Todoroki, T.Tomasek, L.Tomasek, M.Torii, H.Towell, R. S.Tserruya, I.Tsuchimoto, Y.Tsuji, T.Vale, C.van Hecke, H. W.Vargyas, M.Vazquez-Zambrano, E.Veicht, A.Velkovska, J.Vertesi, R.Virius, M.Vossen, A.Vrba, V.Vznuzdaev, E.Wang, X. R.Watanabe, D.Watanabe, K.Watanabe, Y.Watanabe, Y. S.Wei, F.Wei, R.Whitaker, S.White, S. N.Winter, D.Wolin, S.Woody, C. L.Wysocki, M.Yamaguchi, Y. L.Yang, R.Yanovich, A.Ying, J.Yokkaichi, S.You, Z.Younus, I.Yushmanov, I. E.Zajc, W. A.Zelenski, A.PHENIX Collaboration
Ewha Authors
한인식
SCOPUS Author ID
한인식scopus
Issue Date
2015
Journal Title
PHYSICAL REVIEW C
ISSN
2469-9985JCR Link

2469-9993JCR Link
Citation
PHYSICAL REVIEW C vol. 91, no. 4
Publisher
AMER PHYSICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
We present measurements of electrons and positrons from the semileptonic decays of heavy-flavor hadrons at midrapidity (vertical bar gamma vertical bar < 0.35) in Au + Au collisions at root(NN)-N-S = 62.4 GeV. The data were collected in 2010 by the PHENIX experiment that included the new hadron-blind detector. The invariant yield of electrons from heavy-flavor decays is measured as a function of transverse momentum in the range 1 < p(T)(e) < 5 GeV/c. The invariant yield per binary collision is slightly enhanced above the p + p reference in Au + Au 0%-20%, 20%-40%, and 40%-60% centralities at a comparable level. At this low beam energy this may be a result of the interplay between initial-state Cronin effects, final-state flow, and energy loss in medium. The v(2) of electrons from heavy-flavor decays is nonzero when averaged between 1.3 < p(T)(e) < 2.5 GeV/c for 0%-40% centrality collisions at root(NN)-N-S = 62.4 GeV. For 20%-40% centrality collisions, the v(2) at root(NN)-N-S = 62.4 GeV is smaller than that for heavy-flavor decays at root(NN)-N-S = 200 GeV. The v2 of the electrons from heavy-flavor decay at the lower beam energy is also smaller than v(2) for pions. Both results indicate that the heavy quarks interact with the medium formed in these collisions, but they may not be at the same level of thermalization with the medium as observed at root(NN)-N-S = 200 GeV.
DOI
10.1103/PhysRevC.91.044907
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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