Flow effects on the freeze-out phase-space density in heavy ion collisions

Abstract

The strong longitudinal expansion of the reaction zone formed in relativistic heavy-ion collisions is found to significantly reduce the spatially averaged pion phase-space density, compared to naive estimates based on thermal distributions. This has important implications for data interpretation and leads to larger values for the extracted pion chemical potential at kinetic freeze-out.

5 pages, 3 figures included via epsfig, added discussion of different transverse density profiles, 1 new figure

References in corpus (6)

• Particle Interferometry for Relativistic Heavy-Ion Collisions
• Primordial hadrosynthesis in the Little Bang
• The Little Bang: Searching for quark-gluon matter in relativistic heavy-ion collisions
• Universal pion freeze-out phase-space density
• Multiboson effects in multiparticle production
• Multi-boson effects in Bose-Einstein interferometry and the multiplicity distribution

Cited by in corpus (12)

• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions
• Bose-Einstein correlations of pion pairs in central Pb+Pb collisions at CERN SPS energies
• Entropy Production at RHIC
• Correlations, Fluctuations, and Flow Measurements from the STAR Experiment
• Phase-space densities and effects of resonance decays in hydrodynamic approach to heavy ion collisions
• Rapidity dependence of deuteron production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• HBT search for new states of matter in A+A collisions
• The freeze-out mechanism and phase-space density in ultrarelativistic heavy-ion collisions
• Two-particle correlations on transverse momentum and momentum dissipation in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV
• Structure formation during phase transitions in strongly interacting matter
• Charge and isospin fluctuations in a non-ideal pion gas with dynamically fixed particle number