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How Hard Are the Form Factors in Hadronic Vertices with Heavy Mesons?

F. O. Durães·F. S. Navarra·M. Nielsen
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Abstract

The $NDΛ_c$ and $ND^*Λ_c$ form factors are evaluated in a full QCD sum rule calculation. We study the double Borel sum rule for the three point function of one meson one nucleon and one $Λ_c$ current up to order six in the operator product expansion. The double Borel transform is performed with respect to the nucleon and $Λ_c$ momenta, and the form factor is evaluated as a function of the momentum $Q^2$ of the heavy meson. These form factors are relevant to evaluate the charmonium absorption cross section by hadrons. Our results are compatible with constant form factors in these vertices.

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F. O. Durães, F. S. Navarra, M. Nielsen. 2000-10-26. How Hard Are the Form Factors in Hadronic Vertices with Heavy Mesons?. https://doi.org/10.1016/s0370-2693(01)00011-9

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