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Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon

G. Q. Li·C. M. Ko
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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 GSI. 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.

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G. Q. Li, C. M. Ko. 1994-07-08. Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon. https://doi.org/10.1103/physrevc.50.1725

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