Baryon phase-space density in heavy-ion collisions

Abstract

The baryon phase-space density at mid-rapidity from central heavy-ion collisions is estimated from proton spectra with interferometry and deuteron coalescence measurements. It is found that the mid-rapidity phase-space density of baryons is significantly lower at the SPS than the AGS, while those of total particles (pion + baryon) are comparable. Thermal and chemical equilibrium model calculations tend to over-estimate the phase-space densities at both energies.

5 pages, 2 tables, no figure. RevTeX style. Accepted for publication in Phys. Rev. C Rapid Communication

References in corpus (4)

• Two-proton correlations from 158 AGeV Pb+Pb central collisions
• Kinetic Freeze-out and Radial Flow in 11.6 A GeV Au+Au Collisions
• Deuterons and space-momentum correlations in high energy nuclear collisions
• Two-Proton Correlations from 14.6A GeV/c Si+Pb and 11.5A GeV/c Au+Au Central Collisions

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• Pion, kaon, and (anti-)proton production in U+U Collisions at $\sqrt{s_{NN}}$ = 193 GeV measured with the STAR detector
• Correlation between the charged kaon ratio and the baryon phase-space density in heavy-ion collisions
• Effects of nuclear absorption on the antiLambda/antiproton ratio in relativistic heavy ion collisions
• Systematics of mid-rapidity K-/pi ratio in heavy-ion collisions
• Phase-space density in heavy-ion collisions revisited