Comparing Standard Distribution and Its Tsallis Form of Transverse Momenta in High Energy Collisions

被引：10
|
作者：
Si, Rui-Fang [1 ,2 ,3 ]
Li, Hui-Ling [4 ]
Liu, Fu-Hu [1 ,2 ]
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] Lvliang Coll, Dept Math & Sci, Fenyang Normal Campus, Fenyang 032300, Shanxi, Peoples R China
[4] Shanxi Normal Univ, Inst Modern Phys, Linfen 041004, Shanxi, Peoples R China
来源：
ADVANCES IN HIGH ENERGY PHYSICS | 2018年 / 2018卷
基金：
中国国家自然科学基金;
关键词：
HEAVY-ION COLLISIONS; PB-PB COLLISIONS; HADRON-PRODUCTION; MULTIPLICITY DISTRIBUTIONS; MULTIHADRON PRODUCTION; EXCITATION-FUNCTIONS; PARTICLE-PRODUCTION; UNIFIED DESCRIPTION; AA COLLISIONS; AU COLLISIONS;
D O I：
10.1155/2018/7895967
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：
The experimental (simulated) transverse momentum spectra of negatively charged pions produced at midrapidity in central nucleus-nucleus collisions at the Heavy-Ion Synchrotron (SIS), Relativistic Heavy-Ion Collider (RHIC), and Large Hadron Collider (LHC) energies obtained by different collaborations are selected by us to investigate, where a few simulated data are taken from the results of FOPI Collaboration which uses the IQMD transport code based on Quantum Molecular Dynamics. A two-component standard distribution and the Tsallis form of standard distribution are used to fit these data in the framework of a multisource thermal model. The excitation functions of main parameters in the two distributions are analyzed. In particular, the effective temperatures extracted from the two-component standard distribution and the Tsallis form of standard distribution are obtained, and the relation between the two types of effective temperatures is studied.
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收藏
页数：12
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