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

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

2009-01-05

arxiv.org/abs/0901.0505v4

Phys.Rev.D79:074020,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 8 figures and 6 tables. More references and discussions added, typos corrected, some descriptions changed. Publicatio

Scientific paper

10.1103/PhysRevD.79.074020

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.

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