The analysis of the excited bottom and bottom strange states $B_1(5721)$, $B_2^{\ast }(5747)$, $B_{s1}(5830)$, $B_{s2}^{\ast }(5840)$, $B_J(5840)$ and $B_J(5970)$ in B meson family

Abstract

In order to make a further confirmation about the assignments of the excited bottom and bottom strange mesons $B_1(5721)$, $B_2^{\ast }(5747)$, $B_{s1}(5830)$, $B_{s2}^{\ast }(5840)$ and meanwhile identify the possible assignments of $B_J(5840)$, $B_J(5970)$, we study the strong decays of these states with the ${}^3{P}_0$ decay model. Our analysis support $B_1(5721)$ and $B_2^{\ast }(5747)$ to be the $1P_1^{\prime }$ and $1^3{P}_2$ assignments and the $B_{s1}(5830)$, $B_{s2}^{\ast }(5840)$ to be the strange partner of $B_1(5721)$ and $B_2^{\ast }(5747)$. Besides, we tentatively identify the recently observed $B_J(5840)$, $B_J(5970)$ as the $2^3{S}_1$ and $1^3{D}_3$ states, respectively. It is noticed that this conclusion needs further confirmation by measuring the decay channel to $B\pi$ of $B_J(5840)$ and $B_J(5970)$ in experiments.