TY  - INPR
A1  - Bravina, Larissa
A1  - Zabrodin, Eugene E.
A1  - Bass, Steffen A.
A1  - Bleicher, Marcus
A1  - Brandstetter, Mathias
A1  - Fäßler, Amand
A1  - Fuchs, Christian
A1  - Greiner, Walter
A1  - Soff, Sven
A1  - Stöcker, Horst
T1  - Equation of state of resonance-rich matter in the central cell in heavy-ion collisions at √s =200 A GeV
N2  - The equilibration of hot and dense nuclear matter produced in the central cell of central Au+Au collisions at RHIC (sqrt s = 200 A GeV) energies is studied within a microscopic transport model. The pressure in the cell becomes isotropic at t approx 5 fm/c after beginning of the collision. Within the next 15 fm/c the expansion of matter in the cell proceeds almost isentropically with the entropy per baryon ratio S/A approx 150, and the equation of state in the (P,epsilon) plane has a very simple form, P=0.15 epsilon. Comparison with the statistical model of an ideal hadron gas indicates that the time t approx 20 fm/c may be too short to reach the fully equilibrated state. Particularly, the creation of long-lived resonance-rich matter in the cell decelerates the relaxation to chemical equilibrium. This resonance-abundant state can be detected experimentally after the thermal freeze-out of particles.
Y1  - 2000
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4785
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-7158
SN  - 2469-9985
SN  - 1538-4497
SN  - 1089-490X
SN  - 2469-9993
N1  - Später erschienen in: Physical review. C, Nuclear physics, 63.2001, Nr. 6, Art. 064902, doi:10.1103/PhysRevC.63.064902
SP  - 1
EP  - 21
ER  -