Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (3): 73 doi: 10.1007/s41365-016-0069-7

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles     Next Articles

Nuclear in-medium effects on η dynamics in proton–nucleus collisions

Jie Chen 1,2  Zhao-Qing Feng 1,3  Jian-Song Wang 1   

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

    This work was supported by the Major State Basic Research Development Program in China (No. 2014CB845405), the National Natural Science Foundation of China Projects (Nos. 11175218, U1332207 and U1432247) and the Youth Innovation Promotion Association of Chinese Academy of Sciences, and the Scientific Research Program of Shanxi Provincial Education Department (No. 14JK1794).

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Jie Chen, Zhao-Qing Feng, Jian-Song Wang. Nuclear in-medium effects on η dynamics in proton–nucleus collisions.Nuclear Science and Techniques, 2016, 27(3): 73     doi: 10.1007/s41365-016-0069-7

Abstract:

The dynamics of the ηη meson produced in proton-induced nuclear reactions via the decay of N∗(1535)N∗(1535) has been investigated within the Lanzhou quantum molecular dynamics transport model. The in-medium modifications of the ηη production in dense nuclear matter are included in the model, in which an attractive ηη-nucleon potential is implemented. The impact of the ηη optical potential on the ηη dynamics is investigated. It is found that the attractive potential leads to the reduction in high-momentum (kinetic energy) production from the spectra of momentum distributions and inclusive cross sections and increasing the reabsorption process by surrounding nucleons.

Key words: LQMD model η, Production, In-medium effects, Proton–nucleus collisions