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Motivated by the rapid development of heavy flavor physics experiment, westudy the tree-dominated nonleptonic $\bar{B}_{u,d,s}^* \toD_{u,d,s}^*V$~($V=D^{*-},D_s^{*-},K^{*-},{\rho}^-$) decays within thefactorization approach. The relevant transition form factors are calculated byemploying the covariant light-front quark model. The helicity amplitudes arecalculated and analyzed in detail, and a very clear hierarchy structure $|H_{-0}| \approx 2|H_{00}| > |H_{0-}|\approx|H_{--}|>|H_{0+}|\approx|H_{++}|$is presented. The branching fractions are computed and discussed. Numerically,the CKM-favored $\bar{B}^*_q\to D^*_q \rho^{-}$ and $D^*_q D_s^{*-}$ decayshave relatively large branching fractions, $\gtrsim {\cal O}(10^{-8})$, and arehopeful to be observed by LHC and Belle-II experiments in the future.

Study of $\bar{B}_{u,d,s}^* \to D_{u,d,s}^* V\,(V=D_{d,s}^{*-}\,,K^{*-}\,,{\rho}^-)$ weak decays

Study of $\bar{B}_{u,d,s}^* \to D_{u,d,s}^* V\,(V=D_{d,s}^{-}\,,K^{-}\,,{\rho}^-)$ weak decays