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29 March 2024
 
  » arxiv » nucl-th/9912046

 Article overview


Model for $J/psi$ absorption in hadronic matter
Ziwei Lin ; C. M. Ko ;
Date 20 Dec 1999
Journal Phys.Rev. C62 (2000) 034903
Subject nucl-th hep-ph
AbstractThe cross sections for $J/psi$ absorption by $pi$ and $ ho$ mesons are studied in a meson-exchange model that includes not only pseudoscalar-pseudoscalar-vector-meson couplings but also three-vector-meson and four-point couplings. We find that they are much larger than in a previous study where only pseudoscalar-pseudoscalar-vector-meson couplings were considered. Including form factors at interaction vertices, the $J/psi$ absorption cross sections $sigma_{pi psi}$ and $sigma_{ ho psi}$ are found to have values on the order of 7 mb and 3 mb, respectively. Their thermal averages in hadronic matter at temperature T=150 MeV are, respectively, about 1 mb and 2 mb.
Source arXiv, nucl-th/9912046
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