Transition to resonance-rich matter in heavy ion collisions at RHIC energies

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dc.creatorBravina, L. V.
dc.creatorZabrodin, E. E.
dc.creatorBleicher, M.
dc.creatorBass, S. A.
dc.creatorBrandstetter, M.
dc.creatorFaessler, A.
dc.creatorFuchs, C.
dc.creatorGreiner, W.
dc.creatorGorenstein, M. I.
dc.creatorSoff, S.
dc.creatorStoecker, H.
dc.date2000-10-26
dc.date.accessioned2026-07-07T10:54:36Z
dc.date.available2026-07-07T10:54:36Z
dc.descriptionThe equilibration of hot and dense nuclear matter produced in the central region in central Au+Au collisions at $\sqrt{s}=200$ AGeV is studied within the microscopic transport model UrQMD. The pressure here becomes isotropic at $t \approx 5$ fm/c. Within the next 15 fm/c the expansion of the matter proceeds almost isentropically with the entropy per baryon ratio $S/A \approx 150$. During this period the equation of state in the $(P,ε)$-plane has a very simple form, $P=0.15 ε$. Comparison with the statistical model (SM) of an ideal hadron gas reveals that the time of $\approx 20$ fm/$c$ may be too short to attain the fully equilibrated state. Particularly, the fractions of resonances are overpopulated in contrast to the SM values. The creation of such a long-lived resonance-rich state slows down the relaxation to chemical equilibrium and can be detected experimentally.
dc.descriptionTalk at the conference Strangeness'2000, to be published in J. of Phys. G
dc.identifierhttps://arxiv.org/abs/nucl-th/0010088
dc.identifierhttp://arxiv.org/abs/nucl-th/0010088
dc.identifierJ.Phys.G27:421-426,2001
dc.identifierdoi:10.1088/0954-3899/27/3/321
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185849
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTransition to resonance-rich matter in heavy ion collisions at RHIC energies
dc.typetext

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