Examine the species and beam-energy dependence of particle spectra using Tsallis Statistics

Abstract

Tsallis Statistics was used to investigate the non-Boltzmann distribution of particle spectra and their dependence on particle species and beam energy in the relativistic heavy-ion collisions at SPS and RHIC. Produced particles are assumed to acquire radial flow and be of non-extensive statistics at freeze-out. J/psi and the particles containing strangeness were examined separately to study their radial flow and freeze-out. We found that the strange hadrons approach equilibrium quickly from peripheral to central A+A collisions and they tend to decouple earlier from the system than the light hadrons but with the same final radial flow. These results provide an alternative picture of freeze-outs: a thermalized system is produced at partonic phase; the hadronic scattering at later stage is not enough to maintain the system in equilibrium and does not increase the radial flow of the copiously produced light hadrons. The J/psi in Pb+Pb collisions at SPS is consistent with early decoupling and obtains little radial flow. The J/psi spectra at RHIC are also inconsistent with the bulk flow profile.

12 pages, 4 figures, added several references and some clarifications etc

References in corpus (18)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Measurements of Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200 GeV
• Statistical hadronization of heavy quarks in ultra-relativistic nucleus-nucleus collisions
• J/psi Production vs Transverse Momentum and Rapidity in p+p Collisions at sqrt(s) = 200 GeV
• J/psi Production in Quark-Gluon Plasma
• Energy dependence of phi meson production in central Pb+Pb collisions at sqrt(s_nn) = 6 to 17 GeV
• J/psi Production in sqrt (s_NN)= 200 GeV Cu+Cu Collisions
• Quark Coalescence based on a Transport Equation
• J/psi production at high transverse momentum in p+p and Cu+Cu collisions at \sNN=200GeV
• Multiplicity fluctuations due to the temperature fluctuations in high-energy nuclear collisions
• The Compressed Baryonic Matter Experiment at FAIR: Progress with feasibility studies and detector developments
• Evidence for non-hadronic interactions of charm degrees of freedom in heavy-ion collisions at relativistic energies
• J/$\psi$ production in In-In and p-A collisions
• Heavy Flavor Tracker (HFT) : A new inner tracking device at STAR
• Charm and beauty at the LHC
• Collective Phenomena in Heavy Ion Collisions
• Is Strangeness Chemically Equilibrated?

Cited by in corpus (55)

• Black hole thermodynamical entropy
• Measurement of neutral mesons in p+p collisions at sqrt(s) = 200 GeV and scaling properties of hadron production
• Radial Flow in Non-Extensive Thermodynamics and Study of Particle Spectra at LHC in the Limit of Small $(q-1)$
• Consequences of temperature fluctuations in observables measured in high energy collisions
• Generalised Tsallis Statistics in Electron-Positron Collisions
• System size dependence of hadron $p_T$ spectra in p+p and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Energy dependence of acceptance-corrected dielectron excess mass spectrum at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}}=19.6$ and 200 GeV
• Statistical Origin of Constituent-Quark Scaling in the QGP hadronization
• Formulation of transverse mass distributions in Au-Au collisions at 200 GeV/nucleon
• Reply to Comment on "Towards a large deviation theory for strongly correlated systems"
• q-Generalization of the inverse Fourier transform
• Disentangling random thermal motion of particles and collective expansion of source from transverse momentum spectra in high energy collisions
• Di-electron spectrum at mid-rapidity in $p+p$ collisions at $\sqrt{s}=200$ GeV
• On the possibility of q-scaling in high energy production processes
• Nonequilibrium kinetic freeze-out properties in relativistic heavy ion collisions from energies employed at the RHIC beam energy scan to those available at the LHC
• Effects of coalescence and isospin symmetry on the freezeout of light nuclei and their anti-particles
• Identified particle spectra in Pb-Pb, Xe-Xe and p-Pb collisions with Tsallis blast-wave model
• The imprints of superstatistics in multiparticle production processes
• Rényi and Tsallis entropies: three analytic examples
• Consistent nonadditive approach and nuclear equation of state
• Non-extensive statistics, relativistic kinetic theory and fluid dynamics
• Statistical characterization of the standard map
• Di-lepton production in p+p collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV from STAR
• Fluid dynamical equations and transport coefficients of relativistic gases with non-extensive statistics
• Collective expansion in pp collisions using the Tsallis statistics
• Inversion of Tsallis' q-Fourier Transform and the complex-plane generalization
• Boltzmann-Gibbs entropy is sufficient but not necessary for the likelihood factorization required by Einstein
• Study of kinetic freeze-out parameters as function of rapidity in pp collisions at CERN SPS energies
• Equivalence of volume and temperature fluctuations in power-law ensembles
• 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
• Inter-occurrence times and universal laws in finance, earthquakes and genomes
• Dielectron Azimuthal Anisotropy at mid-rapidity in Au+Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Some Open Points in Nonextensive Statistical Mechanics
• Decoupling of non-strange, strange and multi-strange particles from the system in Cu-Cu, Au-Au and Pb-Pb collisions at high energies
• Reflections on the q-Fourier transform and the q-Gaussian function
• QCD equation of state with Tsallis statistics for heavy-ion collisions
• The universal scaling of kinetic freeze-out parameters across different collision systems at the LHC energy
• Rapidity and Energy Dependences of Temperatures and Volume Extracted from Identified Charged Hadron Spectra in Proton-Proton Collisions at a Super Proton Synchrotron (SPS)
• A Shannon-Tsallis transformation
• Exploring Anisotropic flow via the Boltzmann Transport Equation Employing the Tsallis Blast Wave Description at LHC energies
• Particle species and energy dependencies of freeze-out parameters in high-energy proton-proton collisions
• The Tsallis-Laplace Transform
• Imprints of energy limitation in transverse momentum distributions of jets
• On J/psi and transverse momentum distributions in high energy collisions
• Nonextensive lattice gauge theories: algorithms and methods
• Analyzing the Correlation Between Thermal and Kinematic Parameters in Various Multiplicity Classes within 7 and 13 TeV pp Collisions
• Pathway Model and Nonextensive Statistical Mechanics
• The di-lepton physics program at STAR
• Measurement of anisotropic radial flow in relativistic heavy ion collisions
• Scale dependence of the q and T parameters of the Tsallis distribution in the process of jet fragmentation
• The Spectrum of Low-$p_T$ $J/\psi$ in Heavy-Ion Collisions in a Statistical Two-Body Fractal Model
• An introduction to nonadditive entropies and a thermostatistical approach of inanimate and living matter
• Measurement methods of radial flow in relativistic heavy-ion collisions
• Study on relativistic transformations for thermodynamic quantities: Boltzmann-Gibbs and Tsallis blast-wave models
• Observation of different scenarios in different temperatures in small and large collision systems