Analysis of the electromagnetic form factors and the radiative decays of the vector heavy-light mesons

In this article, we analyze the electromagnetic form factors of the vector heavy-light mesons to the pseudoscalar heavy-light mesons in the framework of three-point QCD sum rules, where the contributions of vacuum condensate terms <(q) over barq >, <(q) over barg(s)sigma Gq >, < g(s)(2)G(2)>, < f(3)G(3)> and <(q) over barq >< g(s)(2)G(2)> are considered. With these results, we also obtain the radiative decay widths of the vector heavy-light mesons and then compare our results with those of other collaboration's. The final results about the radiative decay widths are Gamma(D*(0)-> D-0 gamma)=1.74(-0.37) +0.40 keV, Gamma(D*(+)-> D+gamma)=0.17(-0.07)(+0.08) keV, Gamma(D-s*-> Ds gamma) = 0.029(-0.008)(+0.009) keV, Gamma(B-0 gamma -> B-0 gamma) = 0.018-0.005+0.006 keV, Gamma(B*(+)-> B+gamma)=0.015(-0.007)(+0.007) keV and Gamma(Bs* -> B-s gamma) = 0.016(-0.005)(+0.003) keV.