Excitation Functions of Related Parameters from Transverse Momentum (Mass) Spectra in High-Energy Collisions

被引：11

作者：

Li, Li-Li ^{[1
,2
]}

Liu, Fu-Hu ^{[1
,2
]}

Waqas, Muhammad ^{[1
,2
]}

Al-Yusufi, Rasha ^{[1
,2
,3
]}

Mujear, Altaf ^{[1
,2
,3
]}

机构：

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

[2] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Shanxi, Peoples R China

[3] Sanaa Univ, Dept Phys, Fac Sci, POB 13499, Sanaa, Yemen

来源：

ADVANCES IN HIGH ENERGY PHYSICS | 2020年 / 2020卷

基金：

中国国家自然科学基金;

关键词：

NUCLEUS-NUCLEUS COLLISIONS; PB-PB COLLISIONS; PARTICLE-PRODUCTION; HADRON-PRODUCTION; DISTRIBUTIONS; MATTER;

D O I：

10.1155/2020/5356705

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：

Transverse momentum (mass) spectra of positively and negatively charged pions and of positively and negatively charged kaons, protons, and antiprotons produced at mid-(pseudo)rapidity in various collisions at high energies are analyzed in this work. The experimental data measured in central gold-gold, central lead-lead, and inelastic proton-proton collisions by several international collaborations are studied. The (two-component) standard distribution is used to fit the data and extract the excitation function of effective temperature. Then, the excitation functions of kinetic freeze-out temperature, transverse flow velocity, and initial temperature are obtained. In the considered collisions, the four parameters increase with the increase of collision energy in general, and the kinetic freeze-out temperature appears at the trend of saturation at the top Relativistic Heavy Ion Collider and the Large Hadron Collider.

引用

页数：21

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