η production in proton-nucleus collisions near threshold

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YANG You-Chang, CHEN Hong and JIANG Huan-Qing. η production in proton-nucleus collisions near threshold[J]. Chinese Physics C, 2008, 32(4): 254-258. doi: 10.1088/1674-1137/32/4/003
YANG You-Chang, CHEN Hong and JIANG Huan-Qing. η production in proton-nucleus collisions near threshold[J]. Chinese Physics C, 2008, 32(4): 254-258.  doi: 10.1088/1674-1137/32/4/003 shu
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Received: 2007-06-21
Revised: 2007-07-30
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η production in proton-nucleus collisions near threshold

    Corresponding author: CHEN Hong,

Abstract: 

The η-meson production in proton-nucleus (pA) collisions near threshold is studied within a relativistic meson-exchange model. The primary production amplitude is presented in the distorted-wave impulse approximation for the nucleus with isospin 0 or 1 by assuming that N*(1535) is excited via a meson exchange and then decays into η and nucleon pair(ηN). Taking 18O and 12C nuclei as examples, we evaluate the production cross sections as a function of the incident proton energy, and analyze the effects of nuclear medium and various meson-exchange contributions. Finally we discuss implications for further
experimental studies at the Cooling Storage Ring (CSR) in Lanzhou.

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