Vector and axial-vector couplings of D and D* mesons in 2+1 flavor Lattice QCD

Abstract

Using the axial-vector coupling and the electromagnetic form factors of the D and D* mesons in 2+1 flavor Lattice QCD, we compute the D*Dπ, DDρand D*D*ρcoupling constants, which play an important role in describing the charm hadron interactions in terms of meson-exchange models. We also extract the charge radii of D and D* mesons and determine the contributions of the light and charm quarks separately.

19 pages, 3 figures; added references and comments, published version

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