Study of Dependence of Kinetic Freezeout Temperature on the Production Cross Section of Particles in Various Centrality Intervals in Au Au and Pb Pb Collisions at High Energies

Abstract

Transverse momentum spectra of pion, proton, lambda, cascade, Omega and deuteron (d) in different centrality intervals in nucleus nucleus collisions at the center of mass energy are analyzed by the blast wave model with Boltzmann Gibbs statistics. We extracted the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume from the transverse momentum spectra of the particles. It is observed that the non-strange and strange (multi strange) particles freezeout separately due to different reaction cross-sections. While the freezeout volume and transverse flow velocity are mass dependent, they decrease with the resting mass of the particles. The present work reveals the scenario of a double kinetic freezeout in nucleus nucleus collisions. Furthermore, the kinetic freezeout temperature and freezeout volume are larger in central collisions than peripheral collisions. However, the transverse flow velocity remains almost unchanged from central to peripheral collisions.

References in corpus (17)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Measurements of Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200 GeV
• Strange and Multi-strange Particle Production in Au+Au Collisions at $\sqrt{s_{NN}}$ = 62.4 GeV
• Beam energy dependence of (anti-)deuteron production in Au+Au collisions at RHIC
• Systematic Analysis of the Non-extensive Statistical Approach in High Energy Particle Collisions - Experiment vs. Theory
• An overview of the experimental study of quark-gluon matter in high-energy nucleus-nucleus collisions
• An evidence of triple kinetic freezeout scenario observed in all centrality intervals in Cu-Cu, Au-Au and Pb-Pb collisions at high energies
• Initial, effective, and kinetic freeze-out temperatures from transverse momentum spectra in high energy proton(deuteron)-nucleus and nucleus-nucleus collisions
• Transverse-momentum spectra of strange particles produced in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV in the chemical non-equilibrium model
• Thermal hadron production in relativistic nuclear collisions
• Effective (kinetic freeze-out) temperature, transverse flow velocity and kinetic freeze-out volume in high energy collisions
• Identified particle spectra in Pb-Pb, Xe-Xe and p-Pb collisions with Tsallis blast-wave model
• The meaning behind observed $p_T$ regions at the LHC energies
• Recent results and open questions on collective type phenomena from A-A to pp collisions
• Anomalous features of particle production in high-multiplicity events of pp collisions at the LHC energies
• Study of Centrality Dependence of Transverse Momentum Spectra of Hadrons and the Freeze-out Parameters at root(sNN) of 62.4 GeV, 130 GeV and 200 GeV
• Study of proton, deuteron and triton at 54.4 GeV

Cited by in corpus (5)

• Effects of coalescence and isospin symmetry on the freezeout of light nuclei and their anti-particles
• Role of chemical potential at kinetic freeze-out using Tsallis non-extensive statistics in proton-proton collisions at the Large Hadron Collider
• Particle species and energy dependencies of freeze-out parameters in high-energy proton-proton collisions
• Comparing effective temperatures in standard and Tsallis distributions from transverse momentum spectra in small collision systems
• Observation of different scenarios in different temperatures in small and large collision systems