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Title: Hadron resonances and phase threshold in heavy ion collisions

Abstract

We show that a measurement of the reaction energy ({radical}(s)) dependence of relative hadron resonance yields in heavy ion collisions can be used to study the phase structure of the dense strongly interacting matter created in these collisions and investigate the origin of the trends observed in the excitation functions of certain soft hadronic observables. We show that the presence of chemical nonequilibrium in light quark abundance imparts a characteristic signature on the energy dependence of resonance yields that differs considerably from what is expected in the equilibrium picture.

Authors:
;  [1];  [2]
  1. Department of Physics, McGill University, Montreal, QC H3A-2T8 (Canada)
  2. (United States)
Publication Date:
OSTI Identifier:
20991028
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevC.75.024902; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; D QUARKS; EXCITATION FUNCTIONS; HADRONS; HEAVY ION REACTIONS; RESONANCE; U QUARKS

Citation Formats

Torrieri, Giorgio, Rafelski, Johann, and Department of Physics, University of Arizona, Tucson, Arizona 85721. Hadron resonances and phase threshold in heavy ion collisions. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.024902.
Torrieri, Giorgio, Rafelski, Johann, & Department of Physics, University of Arizona, Tucson, Arizona 85721. Hadron resonances and phase threshold in heavy ion collisions. United States. doi:10.1103/PHYSREVC.75.024902.
Torrieri, Giorgio, Rafelski, Johann, and Department of Physics, University of Arizona, Tucson, Arizona 85721. Thu . "Hadron resonances and phase threshold in heavy ion collisions". United States. doi:10.1103/PHYSREVC.75.024902.
@article{osti_20991028,
title = {Hadron resonances and phase threshold in heavy ion collisions},
author = {Torrieri, Giorgio and Rafelski, Johann and Department of Physics, University of Arizona, Tucson, Arizona 85721},
abstractNote = {We show that a measurement of the reaction energy ({radical}(s)) dependence of relative hadron resonance yields in heavy ion collisions can be used to study the phase structure of the dense strongly interacting matter created in these collisions and investigate the origin of the trends observed in the excitation functions of certain soft hadronic observables. We show that the presence of chemical nonequilibrium in light quark abundance imparts a characteristic signature on the energy dependence of resonance yields that differs considerably from what is expected in the equilibrium picture.},
doi = {10.1103/PHYSREVC.75.024902},
journal = {Physical Review. C, Nuclear Physics},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}