Dynamics of strangeness production and strange matter formation

  • We want to draw the attention to the dynamics of a (finite) hadronizing quark matter drop. Strange and antistrange quarks do not hadronize at the same time for a baryon-rich system1. Both the hadronic and the quark matter phases enter the strange sector fs 6= 0 of the phase diagram almost immediately, which has up to now been neglected in almost all calculations of the time evolution of the system. Therefore it seems questionable, whether final particle yields reflect the actual thermodynamic properties of the system at a certain stage of the evolution. We put special interest on the possible formation of exotic states, namely strangelets (multistrange quark clusters). They may exist as (meta-)stable exotic isomers of nuclear matter 2. It was speculated that strange matter might exist also as metastable exotic multi-strange (baryonic) objects (MEMO s 3). The possible creation in heavy ion collisions of long-lived remnants of the quark-gluon-plasma, cooled and charged up with strangeness by the emission of pions and kaons, was proposed in 1,4,5. Strangelets can serve as signatures for the creation of a quark gluon plasma. Currently, both at the BNL-AGS and at the CERN-SPS experiments are carried out to search for MEMO s and strangelets, e. g. by the E864, E878 and the NA52 collaborations9,

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Author:Christian Spieles, Marcus BleicherORCiDGND, Lars GerlandGND, Horst StöckerORCiDGND, Carsten GreinerGND
ArXiv Id:http://arxiv.org/abs/nucl-th/9606027
Document Type:Preprint
Date of Publication (online):2006/01/23
Year of first Publication:1996
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/01/23
Tag:Kollisionen schwerer Ionen; MEMOs; QGP; Quark-Gluon-Plasma
MEMOs; QGP; heavy ion collisions; quark-gluon-plasma
Source:Proc. Int. Conf. on Nuclear Physics at the Turn of the Millenium: Structure of Vacuum and Elementary Matter, 10-16 March 1996, Wilderness/George, South Africa S. 491-49. [nucl-th/9606027]
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht