B_{s1}(5830) and B_{s2}^*(5840)

TL;DR

This paper calculates the strong decay widths of the bottom-strange mesons B_{s1}(5830) and B_{s2}^*(5840) using the quark pair creation model, providing predictions for their decay modes and widths.

Contribution

It offers a detailed analysis of the decay properties of B_{s1}(5830) and B_{s2}^*(5840), including mixing states and double pion decay channels, which were not previously thoroughly studied.

Findings

Calculated two-body decay widths for B_{s1}(5830) and B_{s2}^*(5840)

Predicted sizable double pion decay widths for future experimental search

Provided mixing state considerations for B_{s1}(5830) and decay mode analysis

Abstract

In this paper we investigate the strong decays of the two newly observed bottom-strange mesons $B_{s1}(5830)$ and $B_{s2}^*(5840)$ in the framework of the quark pair creation model. The two-body strong decay widths of $B_{s1}(5830)^0\to B^{*+}K^-$ and $B_{s2}^*(5840)^0\to B^+K^-, B^{*+}K^-$ are calculated by considering $B_{s1}(5830)$ to be a mixture between $|^1P_1>$ and $|^3P_1>$ states, and $B_{s2}^*(5840)$ to be a $|^3P_2>$ state. The double pion decay of $B_{s1}(5830)$ and $B_{s2}^*(5840)$ is supposed to occur via the intermediate state $\sigma$ and $f_0(980)$. Although the double pion decay widths of $B_{s1}(5830)$ and $B_{s2}^*(5840)$ are smaller than the two-body strong decay widths of $B_{s1}(5830)$ and $B_{s2}^*(5840)$, one suggests future experiments to search the double pion decays of $B_{s1}(5830)$ and $B_{s2}^*(5840)$ due to their sizable decay widths.