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Coupling constants of $D^*D_sK$ and $D_s^*DK$ processes

M. E. Bracco·A. Lozea·A. Cerqueira Jr.·M. Chiapparini·M. Nielsen
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Abstract

We calculate the coupling constants of $D^*D_sK$ and $D_s^*DK$ vertices using the QCD sum rules technique. We compare results obtained in the limit of SU(4) symmetry and found that the symmetry is broken on the order of 40%.

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M. E. Bracco, A. Lozea, A. Cerqueira Jr., M. Chiapparini, M. Nielsen. 2007-01-16. Coupling constants of $D^*D_sK$ and $D_s^*DK$ processes. https://doi.org/10.1590/s0103-97332007000100019

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