Locating the QCD critical end point through peaked baryon number susceptibilities along the freeze-out line

doi:10.1088/1674-1137/42/1/013103

	Locating the QCD critical end point through peaked baryon number susceptibilities along the freeze-out line
	Li ZB(李志镔); Chen YD(陈亦点); Huang M(黄梅); Li, ZB; Chen, YD; Li, DN; Huang, M
刊名	CHINESE PHYSICS C
	2018
卷号	42 期号:1 页码:53001
关键词	QCD baryon number susceptibilities critical end point phase transition
ISSN号	1674-1137
DOI	10.1088/1674-1137/42/1/013103
文献子类	Article
英文摘要	We investigate the baryon number susceptibilities up to fourth order along different freeze-out lines in a holographic QCD model with a critical end point (CEP), and we propose that the peaked baryon number susceptibilities along the freeze-out line can be used as a clean signature to locate the CEP in the QCD phase diagram. On the temperature and baryon chemical potential plane, the cumulant ratio of the baryon number susceptibilities (up to fourth order) forms a ridge along the phase boundary, and develops a sword-shaped "mountain" standing upright around the CEP in a narrow and oblate region. The measurement of baryon number susceptibilities from heavy-ion collision experiments is along the freeze-out line. If the freeze-out line crosses the foot of the CEP mountain, then one can observe the peaked baryon number susceptibilities along the freeze-out line, and the kurtosis of the baryon number distributions has the highest magnitude. The data from the first phase of the beam energy scan program at the Relativistic Heavy Ion Collider indicates that there should be a peak of the kurtosis of the baryon number distribution at a collision energy of around 5 GeV, which suggests that the freeze-out line crosses the foot of the CEP mountain and the summit of the CEP should be located nearby, around a collision energy of 3-7 GeV.
电子版国际标准刊号	2058-6132
WOS研究方向	Physics
语种	英语
CSCD记录号	CSCD:6153568
WOS记录号	WOS:000423839100005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285588]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Li ZB,Chen YD,Huang M,et al. Locating the QCD critical end point through peaked baryon number susceptibilities along the freeze-out line[J]. CHINESE PHYSICS C,2018,42(1):53001.
APA	李志镔.,陈亦点.,黄梅.,Li, ZB.,Chen, YD.,...&Huang, M.(2018).Locating the QCD critical end point through peaked baryon number susceptibilities along the freeze-out line.CHINESE PHYSICS C,42(1),53001.
MLA	李志镔,et al."Locating the QCD critical end point through peaked baryon number susceptibilities along the freeze-out line".CHINESE PHYSICS C 42.1(2018):53001.