Excitation Functions of Related Parameters from Transverse Momentum (Mass) Spectra in High-Energy Collisions. (10th June 2020)

• Record Type: Journal Article
• Authors: Li, Li-Li; Liu, Fu-Hu; Waqas, Muhammad; Al-Yusufi, Rasha; Mujear, Altaf
• Other Names: Asselmeyer-Maluga Torsten Academic Editor.
• Is Part Of: Advances in high energy physics. Volume 2020(2020)
• Publication Date: 2020-06-10
• Subjects: Particles (Nuclear physics) -- Periodicals; Particles (Nuclear physics); Periodicals; 539.76
• DOI: 10.1155/2020/5356705
• Languages: English
• ISSNs: 1687-7357

Abstract

Abstract : 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.