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

Qin Chang; Yunyun Zhang; Xiaonan Li

doi:10.1088/1674-1137/43/10/103104

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

High Energy Physics - Phenomenology 2019-09-18 v1

Authors: Qin Chang , Yunyun Zhang , Xiaonan Li

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Abstract

Motivated by the rapid development of heavy flavor physics experiment, we study the tree-dominated nonleptonic $\bar{B}_{u,d,s}^* \to D_{u,d,s}^*V$ ~( $V=D^{*-},D_s^{*-},K^{*-},{\rho}^-$ ) decays within the factorization approach. The relevant transition form factors are calculated by employing the covariant light-front quark model. The helicity amplitudes are calculated 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 $D^*_q D_s^{*-}$ decays have relatively large branching fractions, $\gtrsim {\cal O}(10^{-8})$ , and are hopeful to be observed by LHC and Belle-II experiments in the future.

Keywords

nonleptonic decays factorization approach covariant light-front quark model helicity amplitudes branching fractions B meson decays

Cite

@article{arxiv.1908.00807,
  title  = {Study of $\bar{B}_{u,d,s}^* \to D_{u,d,s}^* V\,(V=D_{d,s}^{*-}\,,K^{*-}\,,{\rho}^-)$ weak decays},
  author = {Qin Chang and Yunyun Zhang and Xiaonan Li},
  journal= {arXiv preprint arXiv:1908.00807},
  year   = {2019}
}

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