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arXiv · 1703.09181

Charmed mesons with a symmetry-preserving contact interaction

Fernando E. Serna·Bruno El-Bennich·Gastão Krein
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Abstract

A symmetry-preserving treatment of a vector-vector contact interaction is used to study charmed heavy-light mesons. The contact interaction is a representation of nonperturbative kernels used in Dyson-Schwinger and Bethe-Salpeter equations of QCD. The Dyson-Schwinger equation is solved for the $u,\,d,\,s$ and $c$ quark propagators and the bound-state Bethe-Salpeter amplitudes respecting spacetime-translation invariance and the Ward-Green-Takahashi identities associated with global symmetries of QCD are obtained to calculate masses and electroweak decay constants of the pseudoscalar $\pi,\,K$, $D$ and $D_s$ and vector $\rho$, $K^*$, $D^*$, and $D^*_s$ mesons. The predictions of the model are in good agreement with available experimental and lattice QCD data.

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Fernando E. Serna, Bruno El-Bennich, Gastão Krein. 2017-03-27. Charmed mesons with a symmetry-preserving contact interaction. https://doi.org/10.1103/physrevd.96.014013

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