Measurements of phi meson production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC)

doi:10.1103/PhysRevC.79.064903

	Measurements of phi meson production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC)
	Abelev, B. I.8; Aggarwal, M. M.29; Ahammed, Z.45; Anderson, B. D.18; Arkhipkin, D.12; Averichev, G. S.11; Bai, Y.27,53; Balewski, J.22; Barannikova, O.8; Barnby, L. S.52
刊名	PHYSICAL REVIEW C
	2009-06-01
卷号	79 页码:20
ISSN号	0556-2813
DOI	10.1103/PhysRevC.79.064903
英文摘要	We present results for the measurement of phi meson production via its charged kaon decay channel phi -> K+ K- Au + Au collisions at root S-NN = 62.4, 130, and 200 GeV, and in p + p and d + Au collisions at v root S-NN = 200 GeV from the STAR experiment at the BNL Relativistic Heavy Ion Collider (RHIC). The midrapidity (vertical bar y vertical bar < 0.5) phi meson transverse momentum (p(T)) spectra in central Au + Au collisions are found to be well described by a single exponential distribution. On the other hand, the p(T) spectra from p + p, d + Au, and peripheral Au + Au collisions show power-law tails at intermediate and high p(T) and are described better by Levy distributions. The constant phi/K- yield ratio vs beam species, collision centrality, and colliding energy is in contradiction with expectations from models having kaon coalescence as the dominant mechanism for phi production at RHIC. The Omega/phi yield ratio as a function of p(T) is consistent with a model based on the recombination of thermal s quarks up to p(T) similar to 4 GeV/c, but disagrees at higher transverse momenta. The measured nuclear modification factor, R-dAu, for the phi meson increases above unity at intermediate p(T), similar to that for pions and protons, while R-AA is suppressed due to the energy loss effect in central Au + Au collisions. Number of constituent quark scaling of both R-cp and nu(2) for the phi meson with respect to other hadrons in Au + Au collisions at root S-NN = 200 GeV at intermediate pT is observed. These observations support quark coalescence as being the dominant mechanism of hadronization in the intermediate p(T) region at RHIC.
资助项目	Offices of NP ; HEP ; US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG Excellence Cluster EXC153 of Germany[CNRS/IN2P3] ; RA ; RPL ; EMN of France ; STFC ; EPSRC of the United Kingdom ; FAPESP of Brazil ; Russian Ministry of Sci. and Tech ; NNSFC ; CAS ; MoST ; MoE of China ; IRP ; GA of the Czech Republic ; FOM of the Netherlands ; DAE ; DST ; CSIR of the Government of India ; Swiss NSF ; Polish State Committee for Scientific Research ; Korea Sci. & Eng. Foundation
WOS关键词	QUARK-GLUON-PLASMA ; LARGE TRANSVERSE-MOMENTUM ; NUCLEUS-NUCLEUS COLLISIONS ; TIME PROJECTION CHAMBER ; PLUS AU COLLISIONS ; ELLIPTIC FLOW ; STRANGENESS PRODUCTION ; PHASE-TRANSITION ; D+AU COLLISIONS ; HADRONIC MATTER
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000267701200060
资助机构	Offices of NP ; HEP ; US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG Excellence Cluster EXC153 of Germany ; RA ; RPL ; EMN of France ; STFC ; EPSRC of the United Kingdom ; FAPESP of Brazil ; Russian Ministry of Sci. and Tech ; NNSFC ; CAS ; MoST ; MoE of China ; IRP ; GA of the Czech Republic ; FOM of the Netherlands ; DAE ; DST ; CSIR of the Government of India ; Swiss NSF ; Polish State Committee for Scientific Research ; Korea Sci. & Eng. Foundation
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/30370]
专题	中国科学院近代物理研究所
通讯作者	Abelev, B. I.
作者单位	1.Argonne Natl Lab, Argonne, IL 60439 USA 2.Brookhaven Natl Lab, Upton, NY 11973 USA 3.Univ Calif Berkeley, Berkeley, CA 94720 USA 4.Univ Calif Davis, Davis, CA 95616 USA 5.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 6.Univ Estadual Campinas, Sao Paulo, Brazil 7.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 8.Univ Illinois, Chicago, IL 60607 USA 9.Creighton Univ, Omaha, NE 68178 USA 10.AS CR, Inst Nucl Phys, CZ-25068 Rez, Czech Republic
推荐引用方式 GB/T 7714	Abelev, B. I.,Aggarwal, M. M.,Ahammed, Z.,et al. Measurements of phi meson production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC)[J]. PHYSICAL REVIEW C,2009,79:20.
APA	Abelev, B. I..,Aggarwal, M. M..,Ahammed, Z..,Anderson, B. D..,Arkhipkin, D..,...&Zuo, J. X..(2009).Measurements of phi meson production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC).PHYSICAL REVIEW C,79,20.
MLA	Abelev, B. I.,et al."Measurements of phi meson production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider (RHIC)".PHYSICAL REVIEW C 79(2009):20.