Subthreshold antiproton production in nucleus-nucleus collisions
- 1 February 1994
- journal article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 49 (2) , 1139-1148
- https://doi.org/10.1103/physrevc.49.1139
Abstract
Antiproton production in nucleus-nucleus collisions at energies below the threshold for its production from the nucleon-nucleon interaction in free space is studied in the relativistic Vlasov-Uehling-Uhlenbeck model. The antiproton self-energies in the medium are obtained in the mean-field approximation from the G-parity transformation of the nucleon self-energies. Due to the decrease of antiproton mass in the medium as a result of the attractive scalar mean field, there is an enhanced production of primordinal antiprotons which are, however, mostly annihilated by nucelons as they propagate through the matter. The calculated final antiproton momentum spectrum is seen to agree reasonably with the experimental data.Keywords
This publication has 40 references indexed in Scilit:
- Theoretical description of particle production in heavy-ion reactions at intermediate energiesProgress in Particle and Nuclear Physics, 1993
- Meson production in nuclear collisions and the equation of state of hadronic matterProgress in Particle and Nuclear Physics, 1993
- Antiproton production and annihilation in nuclear collisions at 15AGeVPhysical Review Letters, 1992
- Antibaryon $$\left( {\bar p,\bar \Lambda } \right)$$ production in relativistic nuclear collisionsThe European Physical Journal A, 1991
- Production of energetic particles in heavy-ion collisionsPhysics Reports, 1990
- Subthreshold antiproton,,, and energetic-pion production in relativistic nucleus-nucleus collisionsPhysical Review Letters, 1989
- Subthreshold antiproton production incollisions at 2.1 GeV/nucleonPhysical Review Letters, 1989
- Subthreshold Kaon Production as a Probe of the Nuclear Equation of StatePhysical Review Letters, 1985
- Multiplicities of charged particles up to ISR energiesLettere al Nuovo Cimento (1971-1985), 1973
- Production of Antiprotons via Nuclear MotionPhysical Review Letters, 1965