Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies

被引：9

作者：

Zhao, Hong ^{[1
]}

Liu, Fu-Hu ^{[1
]}

机构：

[1] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Shanxi, Peoples R China

来源：

ADVANCES IN HIGH ENERGY PHYSICS | 2014年 / 2014卷

基金：

中国国家自然科学基金;

关键词：

PLUS AU COLLISIONS; AU+AU COLLISIONS; SPECTRA; HADRONS; MODEL;

D O I：

10.1155/2014/742193

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In the framework of a multisource thermal model, the transverse momentum distributions of charged particles produced in nucleus-nucleus (A-A) and deuteron-nucleus (d-A) collisions at relativistic heavy ion collider (RHIC) energies are investigated by a two-component revised Boltzmann distribution. The calculated results are in agreement with the PHENIX experimental data. It is found that the source temperature increases obviously with increase of the particle mass and incident energy, but it does not show an obvious change with the collision centrality. Then, the values of chemical potentials for up, down, and strange quarks can be obtained from the antiparticle to particle yield ratios in a wide transverse momentum range. The relationship between the chemical potentials of quarks and the transverse momentum with different centralities is investigated, too.

引用

页数：14

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