Violation of energy-per-hadron scaling in a resonance matter

Details Violation of energy-per-hadron scaling in a resonance matter Violation of energy-per-hadron scaling in a resonance matter

2002-06-05

arxiv.org/abs/nucl-th/0206014v1

Phys.Rev. C66 (2002) 014906

Physics

Nuclear Physics

Nuclear Theory

5 pages incl. 3 figures and 2 tables, to be published in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.66.014906

Yields of hadrons, their average masses and energies per hadron at the stage of chemical freeze-out in (ultra)relativistic heavy-ion collisions are analyzed within the statistical model. The violation of the scaling / = 1 GeV observed in Au+Au collisions at $\sqrt{s}$ = 130 AGeV is linked to the formation of resonance-rich matter with a considerable fraction of baryons and antibaryons. The rise of the energy-per-hadron ratio in baryon-dominated matter is discussed. A violation of the scaling condition is predicted for a very central zone of heavy-ion collisions at energies around 40 AGeV.

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