Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김용균 | - |
dc.date.accessioned | 2017-02-27T00:43:10Z | - |
dc.date.available | 2017-02-27T00:43:10Z | - |
dc.date.issued | 2015-06 | - |
dc.identifier.citation | PHYSICAL REVIEW C, v. 91, NO 6, Page. 1-11 | en_US |
dc.identifier.issn | 0556-2813 | - |
dc.identifier.issn | 1089-490X | - |
dc.identifier.uri | https://journals.aps.org/prc/abstract/10.1103/PhysRevC.91.064904 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/25681 | - |
dc.description.abstract | The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au + Au collisions at root s(NN) = 200 GeV down to pT = 0.4 GeV/c. Photons are detected via photon conversions to e(+)e(-) pairs and an improved technique is applied that minimizes the systematic uncertainties that usually limit direct photon measurements, in particular at low pT. We find an excess of direct photons above the N-coll-scaled yield measured in p + p collisions. This excess yield is well described by an exponential distribution with an inverse slope of about 240 MeV/c in the pT range 0.6-2.0 GeV/c. While the shape of the pT distribution is independent of centrality within the experimental uncertainties, the yield increases rapidly with increasing centrality, scaling approximately with N-part(alpha), where alpha = 1.38 +/- 0.03(stat) +/- 0.07(syst). | 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 (USA), 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 (People's Republic of 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 US 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 | NUCLEAR COLLISIONS | en_US |
dc.subject | EMISSION | en_US |
dc.subject | DETECTOR | en_US |
dc.title | Centrality dependence of low-momentum direct-photon production in Au plus Au collisions at root s(NN)=200 GeV | en_US |
dc.type | Article | en_US |
dc.relation.no | 6 | - |
dc.relation.volume | 91 | - |
dc.identifier.doi | 10.1103/PhysRevC.91.064904 | - |
dc.relation.page | 1-11 | - |
dc.relation.journal | PHYSICAL REVIEW C | - |
dc.contributor.googleauthor | Adare, A. | - |
dc.contributor.googleauthor | Afanasiev, S. | - |
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-Bataineh, H. | - |
dc.contributor.googleauthor | Al-Ta'ani, H. | - |
dc.contributor.googleauthor | Alexander, J. | - |
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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