1999/12/31 by Ziwei Lin, C. M. Ko · 1 citation
Physics and Astronomy · #nucl-th #hep-ph
paper · pdf · doi:10.1103/physrevc.62.034903
published as Phys.Rev.C62:034903,2000 · Appendix B added to show detailed comparisons, and meson matrices chosen to be traceless
arxiv created 2000/08/21 · arxiv updated 2009/11/30
The cross sections for J/ψ absorption by π and ρ 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/ψ absorption cross sections σπψ and σρψ 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.