Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN =200 GeV

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Title:	Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN =200 GeV
Authors:	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.
Contributors:	高能與強場物理研究中心
Keywords:	Fysik;Natural Sciences;Naturvetenskap;Nuclear Experiment;Physical Sciences;Physics;Subatomic Physics;Subatom�r fysik
Date:	2016-03-07
Issue Date:	2026-04-23 12:07:35 (UTC+8)
Publisher:	American Physical Society;United States: American Physical Society
Abstract:	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
Appears in Collections:	[Center for High Energy and High Field Physics (CHiP)] journal & Dissertation

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