Feng, ZQ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
Reaction dynamics in collisions of antiprotons on nuclei is investigated within the Lanzhou quantum molecular dynamics model. The reaction channels of elastic scattering, annihilation, charge exchange and inelastic collisions of antiprotons on nucleons have been included in the model. Dynamics on particle production, in particular pions, kaons, antikaons and hyperons, is investigated in collisions of (p) over bar on C-12, Ne-20, Ca-40 and Ta-181 from low to high incident momenta. It is found that the annihilations of (p) over bar on nucleons are of importance to the dynamics of particle production in phase space. Hyperons are mainly produced via meson induced reactions on nucleons and strangeness exchange collisions, which lead to delayed emission in antiproton-nucleus collisions.
Nuclear Science & Technology
; Physics, Nuclear
Major State Basic Research Development Program in China [2014CB845405, 2015CB856903]
; National Natural Science Foundation of China Projects [11175218, U1332207]
; Youth Innovation Promotion Association of Chinese Academy of Sciences