Chiral Lagrangian approach to the J/psi breakup cross section

Abstract

We summarize the results of the SU(4) chiral meson Lagrangian approach to the cross section for J/psi breakup by pion and rho meson impact and suggest a new scheme for the introduction of formfactors for the meson-meson interaction. This scheme respects the fact that on the quark level of description the contact and the meson exchange diagrams are constructed by so-called box and triangle diagrams which contain a different number of vertex functions for the quark-meson coupling. A model calculation for Gaussian vertex functions is presented and the relative importance of contact and meson exchange processes is discussed. We evaluate the dependence of the breakup cross section on the masses of the final D-meson states which can be used for the study of in-medium effects on this quantity.

arXiv comment19 pages, 6 figures, 1 table

References in corpus (1)

• Dyson-Schwinger Equation Approach to the QCD Deconfinement Transition and J/Psi Dissociation

Cited by in corpus (6)

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• Meson formfactor scheme for the chiral Lagrangian approach to J/psi breakup cross sections motivated by a relativistic quark model
• Hadronic Spectral Function and Charm Meson Production
• Charmonium in a hot, dense medium
• Heavy flavor kinetics at the hadronization transition
• Charmonium Absorption in the Meson-exchange Model