Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2015, Vol. 26 ›› Issue (2): S20512 doi: 10.13538/j.1001-8042/nst.26.S20512

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2014)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2014) • Previous Articles     Next Articles

Nuclear dynamics induced by antiprotons

FENG Zhao-Qing (冯兆庆)1, 2   

  1. 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    2State Key Laboratory of Theoretical Physics and Kavli Institute for Theoretical Physics China,
    Chinese Academy of Sciences, Beijing 100190, China
  • Contact: FENG Zhao-Qing E-mail:fengzhq@impcas.ac.cn
  • Supported by:

    Supported by the Major State Basic Research Development Program in
    China (Nos. 2014CB845405 and 2015CB856903), the National Natural
    Science Foundation of China Projects (Nos. 11175218 and U1332207)
    and the Youth Innovation Promotion Association of Chinese Academy of
    Sciences

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FENG Zhao-Qing . Nuclear dynamics induced by antiprotons.Nuclear Science and Techniques, 2015, 26(2): S20512     doi: 10.13538/j.1001-8042/nst.26.S20512

Abstract:

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 on 12C, 20Ne, 40Ca and 181Ta
from low to high incident momenta. It is found that the annihilations of p 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.

Key words: LQMD transport model, Antiproton-nucleus collisions, Strangeness production