Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC

doi:10.1103/PhysRevLett.112.032302

	Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC
	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 LETTERS
	2014-01-23
卷号	112
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.112.032302
文献子类	Article
英文摘要	We report the beam energy (root S-NN = 7.7-200 GeV) and collision centrality dependence of the mean (M), standard deviation (sigma), skewness (S), and kurtosis (kappa) of the net-proton multiplicity distributions in Au + Au collisions. The measurements are carried out by the STAR experiment at midrapidity (vertical bar y vertical bar < 0.5) and within the transverse momentum range 0.4 < p(T) < 0.8 GeV/c in the first phase of the Beam Energy Scan program at the Relativistic Heavy Ion Collider. These measurements are important for understanding the quantum chromodynamic phase diagram. The products of the moments, S sigma and K sigma(2), are sensitive to the correlation length of the hot and dense medium created in the collisions and are related to the ratios of baryon number susceptibilities of corresponding orders. The products of moments are found to have values significantly below the Skellam expectation and close to expectations based on independent proton and antiproton production. The measurements are compared to a transport model calculation to understand the effect of acceptance and baryon number conservation and also to a hadron resonance gas model.
资助项目	National Research Foundation[NRF-2012004024]
WOS关键词	QUARK-GLUON PLASMA ; QCD PHASE-DIAGRAM ; QUANTUM CHROMODYNAMICS ; CRITICAL-POINT ; COLLISIONS ; TRANSITION ; FLUCTUATIONS ; MODEL ; COLLABORATION ; PERSPECTIVE
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000331944100006
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/49411]
专题	中国科学院近代物理研究所
通讯作者	Mohanty, B.
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. Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC[J]. PHYSICAL REVIEW LETTERS,2014,112.
APA	Adamczyk, L..,Adkins, J. K..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,...&STAR Collaboration.(2014).Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC.PHYSICAL REVIEW LETTERS,112.
MLA	Adamczyk, L.,et al."Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC".PHYSICAL REVIEW LETTERS 112(2014).