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Cite Journal: Brazilian Journal of Physics |  Publication Date: Mar 1, 2007 |
 Citations: 1 |  License type: cc-by-nc |
Affiliation: Universidade de São Paulo
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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