View : 70 Download: 30

Dielectron production in Au plus Au collisions at root s(NN)=200 GeV

Title
Dielectron production in Au plus Au collisions at root s(NN)=200 GeV
Authors
Adare, A.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Alexander, J.Alfred, M.Al-Ta'ani, H.Angerami, A.Aoki, K.Apadula, N.Aramaki, Y.Asano, H.Aschenauer, E. C.Atomssa, E. T.Averbeck, R.Awes, T. C.Azmoun, B.Babintsev, V.Bai, M.Bandara, N. S.Bannier, B.Barish, K. N.Bassalleck, B.Bathe, S.Baublis, V.Baumgart, S.Bazilevsky, A.Beaumier, M.Beckman, S.Belmont, R.Berdnikov, A.Berdnikov, Y.Blau, D. S.Bok, J. S.Boyle, K.Brooks, M. L.Bryslawskyj, J.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.Danley, T. W.Datta, A.Daugherity, M. S.David, G.DeBlasio, K.Dehmelt, K.Denisov, A.Deshpande, A.Desmond, E. J.Dharmawardane, K. V.Dietzsch, O.Ding, L.Dion, A.Diss, P. B.Do, J. H.Donadelli, M.D'Orazio, L.Drapier, O.Drees, A.Drees, K. A.Durham, J. M.Durum, A.Edwards, S.Efremenko, Y. V.Engelmore, T.Enokizono, A.Esumi, S.Eyser, K. O.Fadem, B.Feege, N.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.Gallus, P.Garg, P.Garishvili, A.Garishvili, I.Ge, H.Giordano, F.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.Hamilton, H. F.Han, S. Y.Hanks, J.Hasegawa, S.Haseler, T. O. S.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.Hoshino, T.Hotvedt, N.Huang, J.Huang, S.Ichihara, T.Iinuma, H.Ikeda, Y.Imai, K.Imrek, J.Inaba, M.Iordanova, A.Isenhower, D.Issah, M.Ivanishchev, D.Jacak, B. V.Javani, M.Jezghani, M.Jia, J.Jiang, X.Johnson, B. M.Joo, K. S.Jouan, D.Jumper, D. S.Kamin, J.Kanda, S.Kaneti, S.Kang, B. H.Kang, J. H.Kang, J. S.Kapustinsky, J.Karatsu, K.Kasai, M.Kawall, D.Kazantsev, A. V.Kempel, T.Key, J. A.Khachatryan, V.Khanzadeev, A.Kijima, K. M.Kim, B. I.Kim, C.Kim, D. J.Kim, E. -J.Kim, G. W.Kim, H. J.Kim, K. -B.Kim, M.Kim, Y. -J.Kim, Y. K.Kimelman, B.Kinney, E.Kiss, A.Kistenev, E.Kitamura, R.Klatsky, J.Kleinjan, D.Kline, P.Koblesky, T.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.Lee, S. H.Lee, S. R.Leitch, M. J.Leite, M. A. L.Leitgab, M.Lewis, B.Li, X.Lim, S. H.Levy, L. A. LindenLiu, M. X.Love, B.Lynch, D.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.Meles, A.Mendoza, M.Meredith, B.Miake, Y.Mibe, T.Mignerey, A. C.Milov, A.Mishra, D. K.Mitchell, J. T.Miyachi, Y.Miyasaka, S.Mizuno, S.Mohanty, A. K.Mohapatra, S.Montuenga, P.Moon, H. J.Moon, T.Morrison, D. P.Motschwiller, S.Moukhanova, T. V.Murakami, T.Murata, J.Mwai, A.Nagae, T.Nagamiya, S.Nagashima, K.Nagle, J. L.Nagy, M. I.Nakagawa, I.Nakagomi, H.Nakamiya, Y.Nakamura, K. R.Nakamura, T.Nakano, K.Nattrass, C.Nederlof, A.Netrakanti, P. K.Nihashi, M.Niida, T.Nishimura, S.Nouicer, R.Novak, T.Novitzky, N.Nyanin, A. S.O'Brien, E.Ogilvie, C. A.Okada, K.Koop, J. D. OrjuelaOsborn, J. D.Oskarsson, A.Ouchida, M.Ozawa, K.Pak, R.Pantuev, V.Papavassiliou, V.Park, B. H.Park, I. H.Park, J. S.Park, S.Park, S. K.Pate, S. F.Patel, L.Patel, M.Pei, H.Peng, J. -C.Pereira, H.Perepelitsa, D. V.Perera, G. D. N.Peressounko, D. Yu.Perry, J.Petti, R.Pinkenburg, C.Pinson, R.Pisani, R. P.Proissl, M.Purschke, M. L.Qu, H.Rak, J.Ramson, B. J.Ravinovich, I.Read, K. F.Reynolds, D.Riabov, V.Riabov, Y.Richardson, E.Rinn, T.Roach, D.Roche, G.Rolnick, S. D.Rosati, M.Rowan, Z.Rubin, J. G.Sahlmueller, B.Saito, N.Sakaguchi, T.Sako, H.Samsonov, V.Sano, M.Sarsour, M.Sato, S.Sawada, 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.Shoji, K.Shukla, P.Sickles, A.Silva, C. L.Silvermyr, D.Sim, K. S.Singh, B. K.Singh, C. P.Singh, V.Slunecka, M.Snowball, M.Soltz, R. A.Sondheim, W. E.Sorensen, S. P.Sourikova, I. V.Stankus, P. W.Stenlund, E.Stepanov, M.Ster, A.Stoll, S. P.Sugitate, T.Sukhanov, A.Sumita, T.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.Tieulent, R.Timilsina, A.Todoroki, T.Tomasek, L.Tomasek, M.Torii, H.Towell, C. L.Towell, R.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.White, A. S.White, S. N.Winter, D.Wolin, S.Woody, C. L.Wysocki, M.Xia, B.Xue, L.Yalcin, S.Yamaguchi, Y. L.Yang, R.Yanovich, A.Ying, J.Yokkaichi, S.Yoo, J. H.Yoon, I.You, Z.Younus, I.Yu, H.Yushmanov, I. E.Zajc, W. A.Zelenski, A.Zhou, S.Zou, L.PHENIX Collaboration
Ewha Authors
한인식
SCOPUS Author ID
한인식scopus
Issue Date
2016
Journal Title
PHYSICAL REVIEW C
ISSN
0556-2813JCR Link1089-490XJCR Link
Citation
vol. 93, no. 1
Publisher
AMER PHYSICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We present measurements of e(+)e-production at midrapidity in Au + Au collisions at root s(NN) = 200 GeV. The invariant yield is studied within the PHENIX detector acceptance over a wide range of mass (m(ee) < 5 GeV/c(2)) and pair transverse momentum (p(T) < 5 GeV/c) for minimum bias and for five centrality classes. The e(+)e(-) yield is compared to the expectations from known sources. In the low-mass region (m(ee) = 0.30-0.76 GeV/c(2)) there is an enhancement that increases with centrality and is distributed over the entire pair p(T) range measured. It is significantly smaller than previously reported by the PHENIX experiment and amounts to 2.3 +/- 0.4(stat) +/- 0.4(syst) +/- 0.2(model) or to 1.7 +/- 0.3(stat) +/- 0.3(syst) +/- 0.2(model) for minimum bias collisions when the open heavy-flavor contribution is calculated with PYTHIA or MC@NLO, respectively. The inclusive mass and p(T) distributions, as well as the centrality dependence, are well reproduced by model calculations where the enhancement mainly originates from the melting of the rho meson resonance as the system approaches chiral symmetry restoration. In the intermediate-mass region (m(ee) = 1.2-2.8 GeV/c(2)), the data hint at a significant contribution in addition to the yield from the semileptonic decays of heavy-flavor mesons.
DOI
10.1103/PhysRevC.93.014904
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
Files in This Item:
Dielectron production in Au plus Au collisions at root s(NN)=200 GeV.pdf(3.68 MB)Download
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE