Energy scan/dependence of kinetic freeze-out scenarios of multi-strange and other identified particles in central nucleus-nucleus collisions

被引：31

作者：

Waqas, Muhammad ^{[1
,2
,3
,4
]}

Liu, Fu-Hu ^{[1
,2
,3
]}

Wang, Rui-Qin ^{[5
]}

Siddique, Irfan ^{[6
]}

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] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China

[4] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China

[5] Qufu Normal Univ, Dept Phys, Qufu 273165, Shandong, Peoples R China

[6] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL A | 2020年 / 56卷 / 07期

基金：

中国国家自然科学基金;

关键词：

PLUS AU COLLISIONS; QCD PHASE-DIAGRAM; HADRON-PRODUCTION; MULTIHADRON PRODUCTION; AU+AU COLLISIONS; KAON PRODUCTION; TEMPERATURE; PERSPECTIVE; MODEL;

D O I：

10.1140/epja/s10050-020-00192-y

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 transverse momentum (mass) spectra of the multi-strange and non-multi-strange (i.e. other identified) particles in central gold-gold (Au-Au), lead-lead (Pb-Pb), argon-muriate (Ar-KCl) and nickel-nickel (Ni-Ni) collisions over a wide energy range have been studied in this work. The experimental data measured by various collaborations have been analyzed. The blast-wave fit with Tsallis statistics is used to extract the kinetic freeze-out temperature and transverse flow velocity from the experimental data of transverse momentum (mass) spectra. The extracted parameters increase with the increase of collision energy and show the trend of saturation at the Beam Energy Scan (BES) energies at the Relativistic Heavy Ion Collider (RHIC). This saturation implies that the onset energy of the phase transition of partial deconfinement is 7.7 GeV and that of whole deconfinement is 39 GeV. Furthermore, the energy scan/dependence of kinetic freeze-out scenarios are observed for the multi-strange and other identified particles, though the multiple freeze-out scenarios are also observed for various particles.

引用

页数：12

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