Kinetic freezeout and radial flow in 11.6-GeV/A Au + Au collisions

Dobler, Harald; Sollfrank, Josef; Heinz, Ulrich W.

doi:10.1016/S0370-2693(99)00551-1

Kinetic freezeout and radial flow in 11.6-GeV/A Au + Au collisions

Harald Dobler
(
- Regensburg U.
)
,
Josef Sollfrank
(
- Regensburg U.
)
,
Ulrich W. Heinz
(
- Regensburg U. and
- CERN
)

Apr, 1999

4 pages

Published in:

Phys.Lett.B 457 (1999) 353-358

e-Print:

nucl-th/9904018 [nucl-th]

DOI:

10.1016/S0370-2693(99)00551-1

Report number:

CERN-TH-99-96

View in:

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Abstract:

We study the kinetic freeze-out conditions of hadrons in Au+Au collisions at 11.6 A GeV/c using different parametrizations of an expanding thermal fireball. We take into account the available double differential momentum spectra of a variety of particle species, covering a large fraction of the total momentum space. The overall fit to the data is very good and indicates a relatively low kinetic freeze-out temperature of about 90 MeV with an average transverse expansion velocity at midrapidity of about 0.5 c.

Note:

5 pages ReVTeX, incl. 3 figures and 2 tables. Revised version with improved discussion of model and added references. Accepted by Phys. Lett. B Report-no: CERN-TH/99-96

25.75.-q
25.75.Ld
24.10.Pa
scattering: heavy ion
gold
hadron: multiple production
critical phenomena
hadron: particle flow
p
pi

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