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Meson-charmonium dissociation reactions governed by the quark interchange arestudied with temperature-dependent quark potentials. Quark-antiquarkrelative-motion wave functions and masses of charmonia and charmed mesons aredetermined by the central spin-independent part of the potentials or by thecentral spin-independent part and a smeared spin-spin interaction. Theprominent temperature dependence of the masses is found. Based on thepotentials, the wave functions, and the meson masses, we obtaintemperature-dependent cross sections for fifteen pion-charmonium andrho-charmonium dissociation reactions. The numerical cross sections areparametrized for future applications in hadronic matter. The particulartemperature dependence of the J/psi bound state leads to unusual behavior ofthe cross sections for endothermic J/psi dissociation reactions. The quantumnumbers of psi' and chi_c can not make their difference in mass in thetemperature region 0.6T_c < T < T_c, but can make the psi' dissociationdifferent from the chi_c dissociation.

Temperature-dependent Cross Sections for Charmonium Dissociation in Collisions with Pions and Rhos in Hadronic Matter