Pseudorapidity and transverse momentum dependence of charge balance in Au-Au collisions at √sNN=200 GeV

被引：0
作者：
Li Zhiming [1 ]
Li Na [1 ]
Liu Lianshou [1 ]
Wu Yuanfang [1 ]
机构：
[1] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2007年 / 16卷 / 10期
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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：
The charge balance function (BF) is studied in Au-Au collisions at root s(NN) = 200 GeV using the STAR detector. It is observed that within the acceptance (-1.3 < eta < 1.3) of STAR Time Projection Chamber (TPC), the BF is independent of the position of the windows of same size, showing that BF is boost-invariant in the TPC accepted region. It is found that the BF measured in an observed window ,eta w, B(delta eta\eta w), divided by (1 - delta eta/eta w)is independent of the size and position of the observed window eta w. These properties of BF hold for different transverse momenta and the width of BF decreases with the increasing of the latter. The result supports the delayed-hadronization scenario in thermal models.
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页码：3347 / 3354
页数：8
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