\begin{document}$ \bar{B}_{u,d,s}^* \to D_{u,d,s}^*V $\end{document} (\begin{document}$ V = D^{*-},D_s^{*-},K^{*-},{\rho}^- $\end{document}) decays within the factorization approach. The relevant transition form factors are calculated by employing the covariant light-front quark model. Helicity amplitudes are calculated and analyzed in detail, and a very clear hierarchical structure \begin{document}$ |H_{-0}| \approx 2|H_{00}| > |H_{0-}|\approx|H_{–}|>|H_{0+}|\approx|H_{++}| $\end{document} is presented. The branching fractions are computed and discussed. Numerically, the CKM-favored \begin{document}$ \bar{B}^*_q\to D^*_q \rho^{-} $\end{document} and \begin{document}$ D^*_q D_s^{*-} $\end{document} decays have relatively large branching fractions, \begin{document}$ \gtrsim {\cal O}(10^{-8}) $\end{document}, and could be observed by LHC and Belle-II experiments in the future."> <inline-formula><tex-math id="M1">\begin{document}${{\bar{B}_{u,d,s}^* \to D_{u,d,s}^* V\,(V = D_{d,s}^{*-}\,,K^{*-}\,,{\rho}^-)}} $\end{document}</tex-math><alternatives><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/c1e9de58-d64a-4fb7-ad7f-9b540d32a2ed/CPC-2019-0209_M1.jpg"/><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="//www.macurncorp.com/hepnp/article/app/id/c1e9de58-d64a-4fb7-ad7f-9b540d32a2ed/CPC-2019-0209_M1.png"/></alternatives></inline-formula> weak decays -
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