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Excitation functions of related parameters from transverse momentum (mass) spectra in high energy collisions

Authors :
Li, Li-Li
Liu, Fu-Hu
Waqas, Muhammad
Al-Yusufi, Rasha
Mujear, Altaf
Li, Li-Li
Liu, Fu-Hu
Waqas, Muhammad
Al-Yusufi, Rasha
Mujear, Altaf
Publication Year :
2019

Abstract

Transverse momentum (mass) spectra of positively and negatively charged pions, 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 the trend of saturation at the top Relativistic Heavy Ion Collider and the Large Hadron Collider.<br />Comment: 20 pages, 6 figures. Advances in High Energy Physics, accepted

Details

Database :
OAIster
Publication Type :
Electronic Resource
Accession number :
edsoai.on1138915204
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.1155.2020.5356705