Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector

doi:10.1103/PhysRevC.92.014904

	Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector
	Adamczyk, L.1; Adkins, J. K.23; Agakishiev, G.21; Aggarwal, M. M.35; Ahammed, Z.54; Alekseev, I.19; Alford, J.22; Anson, C. D.32; Aparin, A.21; Arkhipkin, D.4
刊名	PHYSICAL REVIEW C
	2015-07-10
卷号	92 页码:27
ISSN号	0556-2813
DOI	10.1103/PhysRevC.92.014904
英文摘要	We present results of analyses of two-pion interferometry in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correlation lengths (Hanbury-Brown-Twiss radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass (m(T)) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.
资助项目	RHIC Operations Group ; RCF at BNL ; NERSC Center at LBNL ; KISTI Center in Korea ; Open Science Grid consortium ; Office of NP within the US DOE Office of Science ; Office of HEP within the US DOE Office of Science ; US NSF ; CNRS/IN2P3 ; FAPESP CNPq of Brazil ; Ministry of Education and Science of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; Korean Research Foundation ; GA of the Czech Republic ; MSMT of the Czech Republic ; FIAS of Germany ; DAE ; DST ; CSIR of India ; National Science Centre of Poland ; National Research Foundation of the Republic of Croatia, Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia
WOS关键词	QUARK-GLUON PLASMA ; RELATIVISTIC NUCLEAR COLLISIONS ; BOSE-EINSTEIN CORRELATIONS ; TRANSVERSE-MOMENTUM ; COULOMB CORRECTIONS ; PB+PB COLLISIONS ; PHASE-TRANSITION ; CRITICAL-POINT ; SPS ENERGIES ; QCD
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000357807800003
资助机构	RHIC Operations Group ; RCF at BNL ; NERSC Center at LBNL ; KISTI Center in Korea ; Open Science Grid consortium ; Office of NP within the US DOE Office of Science ; Office of HEP within the US DOE Office of Science ; US NSF ; CNRS/IN2P3 ; FAPESP CNPq of Brazil ; Ministry of Education and Science of the Russian Federation ; NNSFC ; CAS ; MoST ; MoE of China ; Korean Research Foundation ; GA of the Czech Republic ; MSMT of the Czech Republic ; FIAS of Germany ; DAE ; DST ; CSIR of India ; National Science Centre of Poland ; National Research Foundation of the Republic of Croatia, Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40204]
专题	中国科学院近代物理研究所
通讯作者	Adamczyk, L.
作者单位	1.AGH Univ Sci & Technol, Krakow, Poland 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Univ Birmingham, Birmingham, W Midlands, England 4.Brookhaven Natl Lab, Upton, NY 11973 USA 5.Univ Calif Berkeley, Berkeley, CA 94720 USA 6.Univ Calif Davis, Davis, CA 95616 USA 7.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 8.Univ Estadual Campinas, Sao Paulo, Brazil 9.Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China 10.Univ Illinois, Chicago, IL 60607 USA
推荐引用方式 GB/T 7714	Adamczyk, L.,Adkins, J. K.,Agakishiev, G.,et al. Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector[J]. PHYSICAL REVIEW C,2015,92:27.
APA	Adamczyk, L..,Adkins, J. K..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,...&Zyzak, M..(2015).Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector.PHYSICAL REVIEW C,92,27.
MLA	Adamczyk, L.,et al."Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector".PHYSICAL REVIEW C 92(2015):27.