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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
2018
Source PublicationCHINESE PHYSICS C
ISSN1674-1137
EISSN2058-6132
Volume42Issue:1Pages:53001
SubtypeArticle
AbstractWe 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.
KeywordQCD baryon number susceptibilities critical end point phase transition
DOI10.1088/1674-1137/42/1/013103
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000423839100005
CSCD IDCSCD:6153568
ADS Bibcode2018ChPhC..42a3103L
AXRIV CODE1706
inspireid1603096
Citation statistics
Cited Times:24 [INSPIRE]
Cited Times:30 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285588
Collection理论物理室
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
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.
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