标题:Beam-energy dependence of the directed flow of protons, antiprotons, and pions in au+au collisions
作者:Adamczyk, L. ;Adkins, J.K. ;Agakishiev, G. ;Aggarwal, M.M. ;Ahammed, Z. ;Alekseev, I. ;Alford, J. ;Anson, C.D. ;Aparin, A. ;Arkhipkin, D. ;Aschenauer, 更多
作者机构:[] Wayne State University, Detroit, MI 48201, United States;[Girard, M. ;Kikola, D.P. ;Kisiel, A. ] Warsaw University of Technology, Warsaw, Poland;[C 更多
通讯作者:Adamczyk, L.
来源:Physical Review Letters
出版年:2014
卷:112
期:16
DOI:10.1103/PhysRevLett.112.162301
摘要:Rapidity-odd directed flow (v1) measurements for charged pions, protons, and antiprotons near midrapidity (y=0) are reported in sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At intermediate impact parameters, the proton and net-proton slope parameter dv1/dy|y=0 shows a minimum between 11.5 and 19.6 GeV. In addition, the net-proton dv1/dy|y=0 changes sign twice between 7.7 and 39 GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations. © 2014 American Physical Society.
收录类别:EI;SCOPUS
Scopus被引频次:87
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899510179&doi=10.1103%2fPhysRevLett.112.162301&partnerID=40&md5=4215ccf35bec49d17dfbfa5474cc62d5
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