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| 題名: | Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN =200 GeV |
| 作者: | 彭仁傑;Ajitanand, N. N.;Asano, H.;Aschenauer, E. C.;Atomssa, E. T.;Babintsev, V.;Bassalleck, B.;Berdnikov, A.;Blau, D. S.;Butsyk, S.;Choi, J. B.;Christiansen, P.;Connors, M.;Dion, A.;Do, J. H.;Donadelli, M.;Edwards, S.;Finger, M.;Fokin, S. L.;Frantz, J. E.;Frawley, A. D.;Fukao, Y.;Gainey, K.;Garishvili, A.;Gong, X.;Gonin, M.;Gunji, T.;Han, S. Y.;Hanks, J.;Hoshino, T.;Isinhue, A.;Ivanishchev, D.;Javani, M.;Jouan, D.;Kang, B. H.;Key, J. A.;Khandai, P. K.;Khanzadeev, A.;Kim, E.-J.;Kim, G. W.;Kim, Y. K.;Kleinjan, D.;Kline, P.;Komkov, B.;Lee, S. H.;Leite, M. A. L.;Lim, S. H.;Manion, A.;McGaughey, P. L.;Mendoza, M.;Mignerey, A. C.;Mitchell, J. T.;Mizuno, S.;Morrison, D. P.;Nakagomi, H.;Nattrass, C.;Nishimura, S.;Nouicer, R.;Novák, T.;Nukariya, A.;Obayashi, H.;O'Brien, E.;Ozawa, K.;Park, S.;Pate, S. F.;Patel, L.;Perepelitsa, D. V.;Peressounko, D. Yu;Petti, R.;Pinson, R.;Read, K. F.;Riabov, Y.;Rinn, T.;Roach, D.;Roche, G.;Rowan, Z.;Seidl, R.;Sett, P.;Sexton, A.;Sharma, D.;Shein, I.;Shigaki, K.;Snowball, M.;Stankus, P. W.;Sun, J.;Takagui, E. M.;Tannenbaum, M. J.;Torii, H.;Towell, R. S.;Vale, C.;Vazquez-Zambrano, E.;Veicht, A.;Vértesi, R.;Voas, B.;Vrba, V.;Watanabe, Y.;Watanabe, Y. S.;Wolin, S.;Yanovich, A.;You, Z.;Younus, I. |
| 貢獻者: | 高能與強場物理研究中心 |
| 關鍵詞: | Fysik;Natural Sciences;Naturvetenskap;Nuclear Experiment;Physical Sciences;Physics;Subatomic Physics;Subatom�r fysik |
| 日期: | 2016-03-07 |
| 上傳時間: | 2026-04-23 12:07:35 (UTC+8) |
| 出版者: | American Physical Society;United States: American Physical Society |
| 摘要: | 摘要： The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in minimum bias Au+Au collisions at sNN−−−−√=200 GeV via the yields of electrons from semileptonic decays of charm and bottom hadrons. Previous heavy flavor electron measurements indicated substantial modification in the momentum distribution of the parent heavy quarks owing to the quark-gluon plasma created in these collisions. For the first time, using the PHENIX silicon vertex detector to measure precision displaced tracking, the relative contributions from charm and bottom hadrons to these electrons as a function of transverse momentum are measured in Au+Au collisions. We compare the fraction of electrons from bottom hadrons to previously published results extracted from electron-hadron correlations in p+p collisions at sNN−−−−√=200 GeV and find the fractions to be similar within the large uncertainties on both measurements for pT>4GeV/c. We use the bottom electron fractions in Au+Au and p+p along with the previously measured heavy flavor electron RAA to calculate the RAA for electrons from charm and bottom hadron decays separately. We find that electrons from bottom hadron decays are less suppressed than those from charm for the region 3<pT<4GeV/c.
出版者： United States: American Physical Society
出版日期： 2016-03-07
出處： Physical Review C, 2016-03, Vol.93 (3), Article 034904
版權： licence_http://creativecommons.org/publicdomain/zero
識別號： ISSN: 2469-9985
識別號： ISSN: 1089-490X
識別號： EISSN: 2469-9993
識別號： DOI: 10.1103/PhysRevC.93.034904 |
| 顯示於類別: | [高能與強場物理研究中心] 期刊論文
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