Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

doi:10.1016/j.nuclphysa.2009.11.011

CORC > 近代物理研究所 > 中国科学院近代物理研究所 > 近代物理研究所知识存储（2010之前）

	Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC
	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
	2010
卷号	832 期号:1-2 页码:134-147
关键词	Particle production Photons Forward rapidity Limiting fragmentation
ISSN号	0375-9474
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.
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关键词	QUARK-GLUON PLASMA ; NUCLEUS-NUCLEUS COLLISIONS ; HEAVY-ION COLLISIONS ; PLUS AU COLLISIONS ; MULTIPLICITY ; MATTER ; COLLABORATION ; PERSPECTIVE ; CONDENSATE ; DETECTOR
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
内容类型	期刊论文
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.