Study of strange beauty neutral meson decays into vector and pseudoscalar mesons

In this paper, we have investigated the two-body decay of 𝐵⁰_𝑠 meson into 𝐷^∗−_𝑠 and 𝐾^∗+ which is not observed yet. However, some similar decays, such as 𝐵⁰_𝑠→𝐷^∗−_𝑠𝜌⁺ and 𝐵⁰𝑠→𝐷^¯∗0𝜙, have been observed with numerical experimental branching ratios. To ensure our obtained results for 𝐵0𝑠→𝐷^∗-_𝑠𝐾^∗+ decay, we have applied the used method on similar observed decays. The 𝐵⁰_𝑠→𝐷^∗-_𝑠𝐾^∗+ decay has been calculated using different methods in other literature works, and their results are comparable with the results of the current work. The most precise determinations for the branching fractions of 𝐵⁰_𝑠→𝐷^∗-_𝑠𝐾⁺ and 𝐵⁰_𝑠→𝐷^∗-_𝑠𝜋⁺ decays have been reported by the LHCb and Belle collaborations with the values of B(𝐵⁰_𝑠→𝐷^∗-_𝑠𝐾⁺) = (1.63±0.12)×10^-4 and B(𝐵⁰_𝑠→𝐷^∗−_𝑠𝜋⁺)=(2.40±0.30)×10^-3, respectively. Therefore, we have also calculated the branch ratios of these decay modes and obtained the numerical results as B(𝐵⁰_𝑠→𝐷^∗-_𝑠𝐾⁺)=(1.68±0.17)×10^-4 and B(𝐵⁰_𝑠→𝐷^∗-_𝑠𝜋⁺)=(2.22±0.17)×10^-3, that are much more consistent with the experimental results. The ratio of these, 0.076±0.014, is also in good agreement with the ratio reported by LHCb collaboration, 0.068±0.005. (author)