Analysis of $$D_s D K^*$$ D s D K ∗ and $$D_s D^{*} K^*$$ D s D ∗ K ∗ vertices and branching ratio of $$B^+\rightarrow {K^*}^0 \pi ^+$$ B + → K ∗ 0 π +
European physical journal. C, Particles and fields