Subthreshold antiproton production in nucleus-nucleus collisions Academic Article uri icon


  • Antiproton production from the secondary process is studied for nucleus-nucleus collisions at energies which are below the threshold for its production from the nucleon-nucleon reaction in the free space. In an expanding fireball model, we determine the abundance from the fusion of pions and find that for collisions at 2.1 GeV/nucleon the antiproton to negative pion ratio is 5.5×10-7 and has a similar magnitude to that of the data. © 1989 The American Physical Society.

author list (cited authors)

  • Ko, C. M., & Xia, L. H.

citation count

  • 15

publication date

  • September 1989