In this paper we investigate the strong decays of the two newly observed bottom-strange mesons Bs1(5830) and Bs2∗(5840) in the framework of the quark pair creation model. The two-body strong decay widths of Bs1(5830)0→B∗+K− and Bs2∗(5840)0→B+K−,B∗+K− are calculated by considering Bs1(5830) to be a mixture between ∣1P1> and ∣3P1> states, and Bs2∗(5840) to be a ∣3P2> state. The double pion decay of Bs1(5830) and Bs2∗(5840) is supposed to occur via the intermediate state σ and f0(980). Although the double pion decay widths of Bs1(5830) and Bs2∗(5840) are smaller than the two-body strong decay widths of Bs1(5830) and Bs2∗(5840), one suggests future experiments to search the double pion decays of Bs1(5830) and Bs2∗(5840) due to their sizable decay widths.
@article{arxiv.0901.0505,
title = {B_{s1}(5830) and B_{s2}^*(5840)},
author = {Zhi-Gang Luo and Xiao-Lin Chen and Xiang Liu},
journal= {arXiv preprint arXiv:0901.0505},
year = {2009}
}
Comments
9 pages, 8 figures and 6 tables. More references and discussions added, typos corrected, some descriptions changed. Publication version in PRD