Energy dependent kinetic freeze-out temperature and transverse flow velocity in high energy collisions

Abstract

Transverse momentum spectra of negative and positive pions produced at mid-(pseudo)rapidity in inelastic or non-single-diffractive proton-proton collisions and in central nucleus-nucleus collisions over an energy range from a few GeV to above 10 TeV are analyzed by a (two-component) blast-wave model with Boltzmann-Gibbs statistics and with Tsallis statistics respectively. The model results are in similarly well agreement with the experimental data measured by a few productive collaborations who work at the Heavy Ion Synchrotron (SIS), Super Proton Synchrotron (SPS), Relativistic Heavy Ion Collider (RHIC), and Large Hadron Collider (LHC), respectively. The energy dependent kinetic freeze-out temperature and transverse flow velocity are obtained and analyzed. Both the quantities have quick increase from the SIS to SPS, and slight increase or approximate invariability from the top RHIC to LHC. Around the energy bridge from the SPS to RHIC, the considered quantities in proton-proton collisions obtained by the blast-wave model with Boltzmann-Gibbs statistics show more complex energy dependent behavior comparing with the results in other three cases.

Updated version, 16 pages, 4 figures. Only the first component is used to extract $T_0$ and ${\beta }_T$. Conclusions unchanged. arXiv admin note: text overlap with arXiv:1805.03342

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Cited by in corpus (10)

• Excitation Functions of Tsallis-like Parameters in High-Energy Nucleus-Nucleus Collisions
• Extraction of different temperatures and kinetic freeze-out volume in high energy collisions
• Dark matter substructures affect dark matter-electron scattering in xenon-based direct detection experiments
• Initial and final state temperatures of antiproton emission sources in high energy collisions
• Kinetic freeze-out properties from transverse momentum spectra of pions in high energy proton-proton collisions
• Kinetic freeze-out in central heavy-ion collisions between 7.7 and 2760 GeV per nucleon pair
• Dependence of temperatures and kinetic freeze-out volume on centrality in Au-Au and Pb-Pb collisions at high energy
• Thermodynamic Signatures and Phase Transitions in High-Energy Au-Au Collisions
• A three component model for hadron $p_{\mathrm{T}}$-spectra in pp and Pb-Pb collisions at the LHC
• On Extracting Thermal Parameters and Scenario in High-Energy Collisions