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Nuclear in-medium effects on \(\eta \) dynamics in proton–nucleus collisions

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Abstract

The dynamics of the \(\eta \) meson produced in proton-induced nuclear reactions via the decay of \(N^{*}(1535)\) has been investigated within the Lanzhou quantum molecular dynamics transport model. The in-medium modifications of the \(\eta \) production in dense nuclear matter are included in the model, in which an attractive \(\eta \)-nucleon potential is implemented. The impact of the \(\eta \) optical potential on the \(\eta \) 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.

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Authors and Affiliations

  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Jie Chen, Zhao-Qing Feng & Jian-Song Wang

  2. University of Chinese Academy of Sciences, Beijing, 100190, China

    Jie Chen

  3. Kavli Institute for Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China

    Zhao-Qing Feng

Authors
  1. Jie Chen
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  2. Zhao-Qing Feng
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  3. Jian-Song Wang
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Correspondence to Zhao-Qing Feng.

Additional information

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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Chen, J., Feng, ZQ. & Wang, JS. Nuclear in-medium effects on \(\eta \) dynamics in proton–nucleus collisions. NUCL SCI TECH 27, 73 (2016). https://doi.org/10.1007/s41365-016-0069-7

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  • DOI: https://doi.org/10.1007/s41365-016-0069-7

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