Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김용균 | - |
dc.date.accessioned | 2016-10-10T08:17:24Z | - |
dc.date.available | 2016-10-10T08:17:24Z | - |
dc.date.issued | 2015-04 | - |
dc.identifier.citation | PHYSICAL REVIEW C, v. 91, NO 4, Page. 1-19 | en_US |
dc.identifier.issn | 0556-2813 | - |
dc.identifier.issn | 1089-490X | - |
dc.identifier.uri | http://journals.aps.org/prc/abstract/10.1103/PhysRevC.91.044907 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/23711 | - |
dc.description.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. | en_US |
dc.description.sponsorship | We thank the staff of the Collider-Accelerator and Physics Departments at Brookhaven National Laboratory and the staff of the other PHENIX participating institutions for their vital contributions. We acknowledge support from the Office of Nuclear Physics in the Office of Science of the Department of Energy, the National Science Foundation, Abilene Christian University Research Council, Research Foundation of SUNY, and Dean of the College of Arts and Sciences, Vanderbilt University (U.S.A), Ministry of Education, Culture, Sports, Science, and Technology and the Japan Society for the Promotion of Science (Japan), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (Brazil), Natural Science Foundation of China (P. R. China), Croatian Science Foundation and Ministry of Science, Education, and Sports (Croatia), Ministry of Education, Youth and Sports (Czech Republic), Centre National de la Recherche Scientifique, Commissariat a l'Energie Atomique, and Institut National de Physique Nucleaire et de Physique des Particules (France), Bundesministerium fur Bildung und Forschung, Deutscher Akademischer Austausch Dienst, and Alexander von Humboldt Stiftung (Germany), Hungarian National Science Fund, OTKA, Karoly Robert University College (Hungary), Department of Atomic Energy and Department of Science and Technology (India), Israel Science Foundation (Israel), National Research Foundation of Korea of the Ministry of Science, ICT, and Future Planning (Korea), Physics Department, Lahore University of Management Sciences (Pakistan), Ministry of Education and Science, Russian Academy of Sciences, Federal Agency of Atomic Energy (Russia), VR and Wallenberg Foundation (Sweden), the U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union, the Hungarian American Enterprise Scholarship Fund, and the US-Israel Binational Science Foundation. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.subject | PROTON-PROTON COLLISIONS | en_US |
dc.subject | HADRON BLIND DETECTOR | en_US |
dc.subject | PHENIX EXPERIMENT | en_US |
dc.subject | CROSS-SECTION | en_US |
dc.subject | CERN ISR | en_US |
dc.subject | SINGLE | en_US |
dc.subject | MATTER | en_US |
dc.subject | ENERGIES; | en_US |
dc.subject | MOMENTUM | en_US |
dc.title | Heavy-quark production and elliptic flow in Au plus Au collisions at root(NN)-N-S=62.4 GeV | en_US |
dc.type | Article | en_US |
dc.relation.no | 4 | - |
dc.relation.volume | 91 | - |
dc.identifier.doi | 10.1103/PhysRevC.91.044907 | - |
dc.relation.page | 1-19 | - |
dc.relation.journal | PHYSICAL REVIEW C | - |
dc.contributor.googleauthor | Adare, A. | - |
dc.contributor.googleauthor | Aidala, C. | - |
dc.contributor.googleauthor | Ajitanand, N. N. | - |
dc.contributor.googleauthor | Akiba, Y. | - |
dc.contributor.googleauthor | Akimoto, R. | - |
dc.contributor.googleauthor | Al-Ta'ani, H. | - |
dc.contributor.googleauthor | Alexander, J. | - |
dc.contributor.googleauthor | Angerami, A. | - |
dc.contributor.googleauthor | Aoki, K. | - |
dc.contributor.googleauthor | Apadula, N. | - |
dc.contributor.googleauthor | Kim, Y. K. | - |
dc.relation.code | 2015000511 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF NUCLEAR ENGINEERING | - |
dc.identifier.pid | ykkim4 | - |
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