Statistical and dynamic models of charge balance functions

被引:37
作者
Cheng, S
Petriconi, S
Pratt, S
Skoby, M
Gale, C
Jeon, S
Pop, VT
Zhang, QH
机构
[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
[2] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA
[3] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
来源
PHYSICAL REVIEW C | 2004年 / 69卷 / 05期
基金
加拿大自然科学与工程研究理事会; 美国国家科学基金会;
关键词
D O I
10.1103/PhysRevC.69.054906
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Charge balance functions, which identify balancing particle-antiparticle pairs on a. statistical basis, have been shown to be sensitive to whether hadronization is delayed by several fm/c in relativistic heavy ion collisions. Results from two classes of models are presented here, microscopic hadronic models and thermal models. The microscopic models give results which are contrary to recently published pi(+)pi(-) balance functions from the STAR Collaboration, whereas the thermal model roughly reproduces the experimental results. This suggests that charge conservation is local at breakup, which is in line with expectations for a delayed hadronization. Predictions are also presented for balance functions binned as a function Of Q(inv).
引用
收藏
页码:054906 / 1
页数:9
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