Antiproton Production in Ni+ni Collisions at 1.85 Gev/nucleon
Abstract
Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon is studied in the relativistic Vlasov-Uehling-Uhlenbeck model. The self-energies of the antiproton are determined from the nucleon self-energies by the G-parity transformation. Also, the final-state interactions of the antiproton including both rescattering and annihilation are explicitly treated. With a soft nuclear equation of state, the calculated antiproton momentum spectrum is in good agreement with recent experimental data from the heavy-ion synchrotron at Gesellschaft, fur Schwerionenforschung Darmstadt. The effect due to the reduced nucleon and antinucleon masses in a medium is found to be more appreciable than in earlier Bevalac experiments with lighter systems and at higher energies.
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/Subject
NUCLEUS-NUCLEUS COLLISIONSHEAVY-ION COLLISIONS
UEHLING-UHLENBECK
MODEL
SUBTHRESHOLD ANTIPROTON
P-NUCLEUS
ENERGY
EQUATION
Physics