Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC
文献类型：期刊论文
| 作者 | Didenko, L.32; Abelev, B. I.27; Aggarwal, M. M.4; Ahammed, Z.35; Alakhverdyants, A. V.18; Anderson, B. D.17; Arkhipkin, D.32; Averichev, G. S.18; Badyal, S. K.19; Balewski, J.13 |
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2010 |
| 卷号 | 832期号:1-2页码:134-147 |
| ISSN号 | 0375-9474 |
| 关键词 | Particle production Photons Forward rapidity Limiting fragmentation |
| DOI | 10.1016/j.nuclphysa.2009.11.011 |
| 英文摘要 | We present the multiplicity and pseudorapidity distributions of photons produced in Au + Au and Cu + Cu collisions at root(NN)-N-s = 62.4 and 200 GeV. The photons are measured in the region -3.7 < eta < -2.3 using the photon Multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of (lie collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for An + Au and Cu + Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be 1.4 +/- 0.1 and 1.2 +/- 0.1 for root(NN)-N-s = 62.4 and 200 GeV, respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of eta-Y-beam, are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies. (C) 2009 Elsevier B.V. All rights reserved. |
| WOS关键词 | QUARK-GLUON PLASMA ; NUCLEUS-NUCLEUS COLLISIONS ; HEAVY-ION COLLISIONS ; PLUS AU COLLISIONS ; MULTIPLICITY ; MATTER ; COLLABORATION ; PERSPECTIVE ; CONDENSATE ; DETECTOR |
| 资助项目 | Offices of NP and HEP within the US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG cluster of excellence 'Origin and Structure of the Universe' ; CNRS/IN2P3 ; STFC and EPSRC of the United Kingdom ; FAPESP CNPq of Brazil ; Ministry of Ed. and Sci. of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; GA and MSMT of the Czech Republic ; FOM and NWO of the Netherlands ; DAE ; DST ; CSIR of India ; Polish Ministry of Sci. and Higher Ed. ; Korea Research Foundation ; Ministry of Sci., Ed. and Sports of the Rep. of Croatia ; Russian Ministry of Sci. and Tech. ; RosAtom of Russia |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000274222600009 |
| 资助机构 | Offices of NP and HEP within the US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG cluster of excellence 'Origin and Structure of the Universe' ; CNRS/IN2P3 ; STFC and EPSRC of the United Kingdom ; FAPESP CNPq of Brazil ; Ministry of Ed. and Sci. of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; GA and MSMT of the Czech Republic ; FOM and NWO of the Netherlands ; DAE ; DST ; CSIR of India ; Polish Ministry of Sci. and Higher Ed. ; Korea Research Foundation ; Ministry of Sci., Ed. and Sports of the Rep. of Croatia ; Russian Ministry of Sci. and Tech. ; RosAtom of Russia |
| 公开日期 | 2011-04-20 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/8021]  |
| 专题 | 近代物理研究所_近代物理研究所知识存储（2010之前） |
| 通讯作者 | Mohanty, B. |
| 作者单位 | 1.Univ Texas Austin, Austin, TX 78712 USA 2.Inst High Energy Phys, Protvino, Russia 3.Penn State Univ, University Pk, PA 16802 USA 4.Panjab Univ, Chandigarh 160014, India 5.Old Dominion Univ, Norfolk, VA 23529 USA 6.Ohio State Univ, Columbus, OH 43210 USA 7.Univ Utrecht, Amsterdam, Netherlands 8.NIKHEF, Amsterdam, Netherlands 9.CUNY City Coll, New York, NY 10031 USA 10.Moscow Engn Phys Inst, Moscow 115409, Russia |
| 推荐引用方式 GB/T 7714 | Didenko, L.,Abelev, B. I.,Aggarwal, M. M.,et al. Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC[J]. NUCLEAR PHYSICS A,2010,832(1-2):134-147. |
| APA | Didenko, L..,Abelev, B. I..,Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,...&Zuo, J. X..(2010).Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC.NUCLEAR PHYSICS A,832(1-2),134-147. |
| MLA | Didenko, L.,et al."Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC".NUCLEAR PHYSICS A 832.1-2(2010):134-147. |
入库方式： OAI收割
来源：近代物理研究所
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