final state interactions and -meson production from heavy-ion collisions
G.I. Lykasov1 - W. Cassing2 - A. Sibirtsev2 - M.V. Rzjanin1
1 Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
2 Institut für Theoretische Physik, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
Received: 28 April 1999 / Revised version: 7 June 1999 Communicated by W. Weise
We calculate the elastic and inelastic ,, , , , reactions within a boson exchange approximation where the coupling constant and form factor are fixed by the reaction in comparison to the experimental data. We find rather large cross sections at low relative momenta of the -meson which leads to a substantial broadening of the -meson width in nuclear matter. The implications of the final state interactions are studied for production in 12C+12C, 40Ca+40Ca and 58Ni+58Ni reactions at about 2A GeV within the HSD transport approach; the drastic changes of the transverse mass spectra relative to a general mT-scaling (for and mesons) might be controlled experimentally by the TAPS Collaboration.
25.75.-q Relativistic heavy-ion collisions - 25.80.-e Meson- and hyperon-induced reactions