Journalartikel

Jahr der Veröffentlichung: 1988

Seiten: 1767-1775

Zeitschrift: Physical Review C

Bandnummer: 38

Heftnummer: 4

ISSN: 0556-2813

eISSN: 1089-490X

DOI Link: https://doi.org/10.1103/PhysRevC.38.1767

Verlag: American Physical Society

Abstract: 

We present a covariant transport theory for heavy-ion collisions based on the σ-ω model. The two-body collision term is introduced in line with relativistic classical kinetic theory assuming the free nucleon-nucleon cross section in the collision integral. Within this approach, we study collisions of 16O+16O at 600 MeV/nucleon for two different parameter sets of the underlying Lagrangian density, i.e., different equations of state. The most striking result is the strong sensitivity of the transverse momentum distribution on the momentum dependence of the mean field which is self-consistently included in the relativistic approach. We find that residual two-particle collisions might even slightly reduce the transverse momentum 𝑝𝑡 due to an increase of stopping power obtained from the collisions. An increase of the cross section by a factor of 2 leads to a much smaller enhancement of 𝑝𝑡 than observed in nonrelativistic calculations with a momentum independent mean field. We furthermore present a first application to high-energy photon production and study the influence of the equation of state on the differential photon yield.

Harvard-Zitierstil: Blättel, B., Koch, V., Cassing, W. and Mosel, U. (1988) Covariant Boltzmann-Uehling-Uhlenbeck approach for heavy-ion collisions, Physical Review C, 38(4), pp. 1767-1775. https://doi.org/10.1103/PhysRevC.38.1767

APA-Zitierstil: Blättel, B., Koch, V., Cassing, W., & Mosel, U. (1988). Covariant Boltzmann-Uehling-Uhlenbeck approach for heavy-ion collisions. Physical Review C. 38(4), 1767-1775. https://doi.org/10.1103/PhysRevC.38.1767