Model for J/ψ absorption in hadronic matter Academic Article uri icon

abstract

  • The cross sections for [Formula Presented] absorption by [Formula Presented] and [Formula Presented] 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 [Formula Presented] absorption cross sections [Formula Presented] and [Formula Presented] are found to have values on the order of 7 mb and 3 mb, respectively. Their thermal averages in hadronic matter at temperature [Formula Presented] MeV are, respectively, about 1 mb and 2 mb. © 2000 The American Physical Society.

author list (cited authors)

  • Lin, Z., & Ko, C. M.

citation count

  • 158

publication date

  • August 2000