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Isospin and isospin/strangeness correlations in relativistic heavy-ion collisions

Mekjian, A. (2007) Isospin and isospin/strangeness correlations in relativistic heavy-ion collisions. Europhysics Letters, 80 (2). Art. No. 22002. ISSN 0295-5075. https://resolver.caltech.edu/CaltechAUTHORS:MEKepl07

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Abstract

A fundamental symmetry of nuclear and particle physics is isospin whose third component is the Gell-Mann/Nishijima expression IZ=Q-(B+S)/2. The role of isospin symmetry in relativistic heavy-ion collisions is studied. An isospin IZ, strangeness S correlation is shown to be a direct and simple measure of flavor correlations, vanishing in a Qg phase of uncorrelated flavors in both symmetric N=Z and asymmetric N≠Z systems. By contrast, in a hadron phase, a IZ/S correlation exists as long as the electrostatic charge chemical potential μQ≠0 as in N≠Z asymmetric systems. A parallel is drawn with a Zeeman effect which breaks a spin degeneracy.


Item Type:Article
Additional Information:Copyright © EPLA, 2007. Print publication: Issue 2 (October 2007). Received 3 July 2007, accepted for publication 3 September 2007. Published 28 September 2007. This work was supported in part by the DOE grant No. DE-FG02-96ER-40987.
Subject Keywords:Relativistic heavy-ion collisions, Particle correlations
Issue or Number:2
Record Number:CaltechAUTHORS:MEKepl07
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:MEKepl07
Alternative URL:http://dx.doi.org/10.1209/0295-5075/80/22002
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8989
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:11 Oct 2007
Last Modified:02 Oct 2019 23:56

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