Freeze-out conditions from net-proton and net-charge fluctuations at RHIC

被引：167

作者：

Alba, Paolo ^{[1
,2
]}

Alberico, Wanda ^{[1
,2
]}

Bellwied, Rene ^{[3
]}

Bluhm, Marcus ^{[1
,2
,4
]}

Sarti, Valentina Mantovani ^{[1
,2
]}

Nahrgang, Marlene ^{[5
,6
]}

Ratti, Claudia ^{[1
,2
]}

机构：

[1] Univ Torino, Dept Phys, I-10125 Turin, Italy

[2] INFN, Sez Torino, I-10125 Turin, Italy

[3] Univ Houston, Dept Phys, Houston, TX 77204 USA

[4] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[5] Duke Univ, Dept Phys, Durham, NC 27708 USA

[6] FIAS, D-60438 Frankfurt, Germany

来源：

PHYSICS LETTERS B | 2014年 / 738卷

关键词：

HEAVY-ION COLLISIONS; MULTIPLICITY DISTRIBUTIONS; HIGHER MOMENTS; TRANSITION; BARYON; MODEL; DENSITY; LATTICE;

D O I：

10.1016/j.physletb.2014.09.052

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate ratios of higher-order susceptibilities quantifying fluctuations in the number of netprotons and in the net-electric charge using the Hadron Resonance Gas (HRG) model. We take into account the effect of resonance decays, the kinematic acceptance cuts in rapidity, pseudo-rapidity and transverse momentum used in the experimental analysis, as well as a randomization of the isospin of nucleons in the hadronic phase. By comparing these results to the latest experimental data from the STAR Collaboration, we determine the freeze-out conditions from net-electric charge and net-proton distributions and discuss their consistency. (C) 2014 The Authors. Published by Elsevier B.V.

引用

页码：305 / 310

页数：6

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