Higher moments of net-proton multiplicity distributions in heavy ion collisions at chemical freeze-out

被引：59

作者：

Fu, Jinghua ^{[1
,2
]}

机构：

[1] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China

[2] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

来源：

PHYSICS LETTERS B | 2013年 / 722卷 / 1-3期

关键词：

Higher moments; Net-proton multiplicity distributions; Hadron resonance gas model; Heavy ion collisions; FLUCTUATIONS; MODEL; RATIOS;

D O I：

10.1016/j.physletb.2013.04.018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first four cumulants and ratios of cumulants of net-proton multiplicity distributions are calculated within the hadron resonance gas model. Quantum statistics, resonance decay contributions and the van der Waals excluded volume corrections are taken into account in the model calculations. The corrections due to quantum statistics are small even at the lower RHIC energies. The van der Waals excluded volume procedure leads to a larger suppression of the particle number fluctuations, especially for higher order cumulants. The STAR most central data on the various order cumulants and moment products at the higher RHIC energies are generally below the Poisson expectations and better described by the van der Waals gas with a hadron radius around r = 0.3 fm. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：144 / 150

页数：7

共 27 条

[1] Abelev B., ARXIV12081974HEPEX
[2] Higher Moments of Net Proton Multiplicity Distributions at RHIC
Aggarwal, M. M.
Ahammed, Z.
Alakhverdyants, A. V.
Alekseev, I.
Alford, J.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Balewski, J.
Barnby, L. S.
Baumgart, S.
Beavis, D. R.
Bellwied, R.
Betancourt, M. J.
Betts, R. R.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Biritz, B.
Bland, L. C.
Bonner, B. E.
Bouchet, J.
Braidot, E.
Brandin, A. V.
Bridgeman, A.
Bruna, E.
Bueltmann, S.
Bunzarov, I.
Burton, T. P.
Cai, X. Z.
Caines, H.
Sanchez, M. Calderon de la Barca
Catu, O.
Cebra, D.
Cendejas, R.
Cervantes, M. C.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Choi, K. E.
Christie, W.
Chung, P.
[J]. PHYSICAL REVIEW LETTERS, 2010, 105 (02)
[3] Hadron production in central nucleus-nucleus collisions at chemical freeze-out
Andronic, A.
Braun-Munzinger, P.
Stachel, J.
[J]. NUCLEAR PHYSICS A, 2006, 772 (3-4) : 167 - 199
[4] Multiplicity fluctuations in hadron-resonance gas
Begun, V. V.
Gorenstein, M. I.
Hauer, M.
Konchakovski, V. P.
Zozulya, O. S.
[J]. PHYSICAL REVIEW C, 2006, 74 (04):
[5] Event-by-event fluctuations of the charged particle ratio from nonequilibrium transport theory
Bleicher, M
Jeon, S
Koch, V
[J]. PHYSICAL REVIEW C, 2000, 62 (06): : 3
[6] Chemical equilibration in Pb plus Pb collisions at the SPS
Braun-Munzinger, P
Heppe, I
Stachel, J
[J]. PHYSICS LETTERS B, 1999, 465 (1-4) : 15 - 20
[7] Net-proton probability distribution in heavy ion collisions
Braun-Munzinger, P.
Friman, B.
Karsch, F.
Redlich, K.
Skokov, V.
[J]. PHYSICAL REVIEW C, 2011, 84 (06):
[8] Acceptance corrections to net baryon and net charge cumulants
Bzdak, Adam
Koch, Volker
[J]. PHYSICAL REVIEW C, 2012, 86 (04):
[9] Comparison of chemical freeze-out criteria in heavy-ion collisions
Cleymans, J
Oeschler, H
Redlich, K
Wheaton, S
[J]. PHYSICAL REVIEW C, 2006, 73 (03):
[10] Unified description of freeze-out parameters in relativistic heavy ion collisions
Cleymans, J
Redlich, K
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (24) : 5284 - 5286

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