Effective(kinetic freeze-out) temperature, transverse flow velocity, and kinetic freeze-out volume in high energy collisions

Muhammad Waqas; Fu-Hu Liu; Li-Li Li; Haidar Mas’ud Alfanda

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Effective(kinetic freeze-out) temperature, transverse flow velocity, and kinetic freeze-out volume in high energy collisions

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The transverse momentum spectra of different types of particles produced in central and peripheral gold–gold(Au–Au)and inelastic proton–proton(pp)collisions at the Relativistic Heavy Ion Collider,as well as in central and peripheral lead-lead(Pb–Pb)and pp collisions at the Large Hadron Collider,are analyzed by the multi-component standard(Boltzmann–Gibbs,Fermi–Dirac,and Bose–Einstein)distributions.The obtained results from the standard distribution give an approximate agreement with the measured experimental data by the STAR,PHENIX,and ALICE Collaborations.The behavior of the effective(kinetic freeze-out)temperature,transverse flow velocity,and kinetic freeze-out volume for particles with different masses is obtained,which observes the early kinetic freezeout of heavier particles as compared to the lighter particles.The parameters of emissions of different particles are observed to be different,which reveals a direct signature of the mass-dependent differential kinetic freeze-out.It is also observed that the peripheral nucleus–nucleus(AA)and pp collisions at the same center-of-mass energy per nucleon pair are in good agreement in terms of the extracted parameters.

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来源
《核技术：英文版》 |2020年第11期|36-49|共14页
作者
Muhammad Waqas; Fu-Hu Liu; Li-Li Li; Haidar Mas’ud Alfanda;
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作者单位

Institute of Theoretical Physics and State Key Laboratory of Quantum Optics and Quantum Optics Devices;

Shanxi University;

Taiyuan 030006;

China;

Collaborative Innovation Center of Extreme Optics;

Shanxi University;

Taiyuan 030006;

China;

School of Nuclear Science and Technology;

University of Chinese Academy of Sciences;

Beijing 100049;

China;

Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics;

Central China Normal University;

Wuhan 430079;

China;

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原文格式 PDF
正文语种 chi
中图分类原子核物理学、高能物理学;
关键词
Transverse momentum spectra; Effective temperature; Kinetic freeze-out temperature; Transverse flow velocity; Kinetic freeze-out volume;

Effective(kinetic freeze-out) temperature, transverse flow velocity, and kinetic freeze-out volume in high energy collisions

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