Effects of collective potentials on pion spectra in relativistic heavy-ion collisions

doi:10.1016/0375-9474(93)90287-8

Nuclear Physics A

Volume 552, Issue 4, 22 February 1993, Pages 591-604

https://doi.org/10.1016/0375-9474(93)90287-8 Get rights and content

Abstract

The effect of collective potentials on pion spectra in ultrarelativistic heavy-ion collisions is investigated. We find the effect of these potential to be very small, too small to explain the observed enhancement at low transverse momenta.

References (25)

T.W. Atwater et al.
Phys. Lett.
(1987)
G.E. Brown et al.
Phys. Lett.
(1991)
H.W. Barz et al.
Phys. Lett.
(1991)
J. Sollfrank et al.
Phys. Lett.
(1990)
M. Kataja et al.
Phys. Lett.
(1990)
P. Gerber et al.
Phys. Lett.
(1990)
H.W. Barz et al.
Phys. Lett.
(1992)
G.F. Bertsch et al.
Phys. Reports
(1988)
V. Koch et al.
Phys. Lett.
(1991)
V. Koch et al.
Nucl. Phys.
(1991)

H. Stroebele

Z. Phys.

(1988)

T. Akesson

Z. Phys.

(1990)

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¹: Supported in part by Deutsche Forschungsgemeinschaft and in part by the U.S. Dept. of Energy Grant No. DE-FG02-88ER40388.

²: Supported by the National Science Foundation under Grant No. 90-17077.

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Effects of collective potentials on pion spectra in relativistic heavy-ion collisions

Abstract

Phys. Lett.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Phys. Reports

Phys. Lett.

Nucl. Phys.

Z. Phys.

Z. Phys.