Probing QCD critical fluctuations from the yield ratio of strange hadrons in relativistic heavy-ion collisions

doi:10.1016/j.physletb.2019.135177

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Probing QCD critical fluctuations from the yield ratio of strange hadrons in relativistic heavy-ion collisions
	Shao, TH ; Chen, JH ; Ko, CM ; Sun, KJ
刊名	PHYSICS LETTERS B
	2020
卷号	801 页码:-
关键词	LIGHT-NUCLEI PRODUCTION MATTER
ISSN号	0370-2693
DOI	10.1016/j.physletb.2019.135177
文献子类	期刊论文
英文摘要	By analyzing the available data on strange hadrons in central Pb+Pb collisions from the NA49 Collaboration at the Super Proton Synchrotron (SPS) and in central Au+Au collisions from the STAR Collaboration at the Relativistic Heavy-Ion Collider (RHIC) in a wide collision energy range from root s(NN) = 6.3 GeV to 200 GeV, we find a possible non-monotonic behavior in the ratio OK-Xi-phi-Lambda = N(K+)N(Xi(-))/N(phi)N(Lambda) of K+, Xi(-), phi, and Lambda yields as a function of root s(NN). Based on the quark coalescence model, which can take into account the effect of quark density fluctuations on hadron production, a possible non-monotonic behavior in the dependence of the strange quark density fluctuation on root s(NN) is obtained. This is in contrast to the coalescence model that does not include quark density fluctuations and also to the statistical hadronization model as both fail to describe even qualitatively the collision energy dependence of the ratio OK-Xi-phi-Lambda. Our findings thus suggest that the signal and location of a possible critical endpoint in the QCD phase diagram, which is expected to result in large quark density fluctuations, can be found in the on-going Bean Energy Scan program at RHIC. (C) 2019 The Author(s). Published by Elsevier B.V.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/33082]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Inst Modern Phys, Shanghai 200433, Peoples R China 3.Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA 4.Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA 5.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Shao, TH,Chen, JH,Ko, CM,et al. Probing QCD critical fluctuations from the yield ratio of strange hadrons in relativistic heavy-ion collisions[J]. PHYSICS LETTERS B,2020,801:-.
APA	Shao, TH,Chen, JH,Ko, CM,&Sun, KJ.(2020).Probing QCD critical fluctuations from the yield ratio of strange hadrons in relativistic heavy-ion collisions.PHYSICS LETTERS B,801,-.
MLA	Shao, TH,et al."Probing QCD critical fluctuations from the yield ratio of strange hadrons in relativistic heavy-ion collisions".PHYSICS LETTERS B 801(2020):-.