Journalartikel

Jahr der Veröffentlichung: 1994

Seiten: 653-675

Zeitschrift: Nuclear Physics A: Nuclear and Hadronic Physics

Bandnummer: 573

Heftnummer: 4

ISSN: 0375-9474

Open Access Status: Green

DOI Link: https://doi.org/10.1016/0375-9474(94)90235-6

Verlag: Elsevier

Abstract: 
We introduce momentum-dependent scalar and vector fields into the Lorentz covariant relativistic BUU (RBUU) approach employing a polynomial ansatz for the relativistic nucleon-nucleon interaction. The momentum-dependent parametrizations are shown to be valid up to about 1 GeV/u for the empirical proton-nucleus optical potential. We perform numerical simulations for heavy-ion collisions within the RBUU approach adopting momentum-dependent and momentum-independent mean fields and calculate the transverse flow in and perpendicular to the reaction plane, the directivity distribution as well as subthreshold K+-production. By means of these observables we discuss the particular role of the momentum-dependent forces and their implications on the nuclear equation of state. We find that only a momentum-dependent parameter set can explain the experimental data on the transverse flow in the reaction plane from 150-1000 MeV/u and the differential K+-production cross sections at 1 GeV/u at the same time.

Harvard-Zitierstil: Maruyama, T., Cassing, W., Mosel, U., Teis, S. and Weber, K. (1994) Study of high-energy heavy-ion collisions in a relativistic BUU approach with momentum-dependent mean fields, Nuclear Physics A: Nuclear and Hadronic Physics, 573(4), pp. 653-675. https://doi.org/10.1016/0375-9474(94)90235-6

APA-Zitierstil: Maruyama, T., Cassing, W., Mosel, U., Teis, S., & Weber, K. (1994). Study of high-energy heavy-ion collisions in a relativistic BUU approach with momentum-dependent mean fields. Nuclear Physics A: Nuclear and Hadronic Physics. 573(4), 653-675. https://doi.org/10.1016/0375-9474(94)90235-6