Interactions of the doubly charmed state Tcc+ with a hadronic medium

We calculate the cross sections of the processes T-cc(+)pi, T-cc(+)rho -> D-(*()) D-(*()) and of the corresponding inverse reactions. We use effective Lagrangians to account for the couplings between light and heavy mesons, and give special attention to the form factors in the vertices. Using QCD sum rules we calculate here for the first time the T-cc(+) - D - D* form factor. The T-cc(+) absorption cross sections are found to be larger than the production ones. We compare our results with the only other existing estimate of these quantities, presented in a work by J. Hong, S. Cho, T. Song and S. H. Lee, in which the authors employed the quasi-free approximation. We find cross sections which are one order of magnitude smaller.

Automated summary

In this study, we calculate the cross sections of various processes related to T-cc(+)pi and T-cc(+)rho -> D-(*()) D-(*()) reactions. We employ effective Lagrangians and QCD sum rules to calculate the form factors and find that the absorption cross sections are larger than the production ones. We compare our results with a previous estimate and observe a significant difference, with our cross sections being one order of magnitude smaller.