RESONANCE DECAYS AND ENTROPY BALANCE IN RELATIVISTIC NUCLEAR COLLISIONS

SOLLFRANK, J and HEINZ, U (1992) RESONANCE DECAYS AND ENTROPY BALANCE IN RELATIVISTIC NUCLEAR COLLISIONS. PHYSICS LETTERS B, 289 (1-2). pp. 132-136. ISSN 0370-2693,

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Abstract

We show that for an estimate of the total entropy produced in heavy ion collisions it is important to take into account resonance decay contributions. The naive procedure, which starts from the measured total or (negative) charged multiplicity and assumes an ideal Bose gas of massless pions for the equation of state. underestimates the entropy by up to a factor 2 compared to more realistic models of the system at freeze-out. The main reasons for this are a higher entropy per particle in a realistic hadron resonance gas and large non-thermal contributions to the observed pion multiplicity from resonance decays.

Item Type: Article
Uncontrolled Keywords: TRANSVERSE-MOMENTUM SPECTRA; PROTON-PROTON COLLISIONS; HEAVY-ION COLLISIONS; ENERGY; MATTER; VECTOR;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:44
URI: https://pred.uni-regensburg.de/id/eprint/54390

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