English

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

High Energy Physics - Phenomenology 2009-04-24 v4 High Energy Physics - Experiment

Abstract

In this paper we investigate the strong decays of the two newly observed bottom-strange mesons Bs1(5830)B_{s1}(5830) and Bs2(5840)B_{s2}^*(5840) in the framework of the quark pair creation model. The two-body strong decay widths of Bs1(5830)0B+KB_{s1}(5830)^0\to B^{*+}K^- and Bs2(5840)0B+K,B+KB_{s2}^*(5840)^0\to B^+K^-, B^{*+}K^- are calculated by considering Bs1(5830)B_{s1}(5830) to be a mixture between 1P1>|^1P_1> and 3P1>|^3P_1> states, and Bs2(5840)B_{s2}^*(5840) to be a 3P2>|^3P_2> state. The double pion decay of Bs1(5830)B_{s1}(5830) and Bs2(5840)B_{s2}^*(5840) is supposed to occur via the intermediate state σ\sigma and f0(980)f_0(980). Although the double pion decay widths of Bs1(5830)B_{s1}(5830) and Bs2(5840)B_{s2}^*(5840) are smaller than the two-body strong decay widths of Bs1(5830)B_{s1}(5830) and Bs2(5840)B_{s2}^*(5840), one suggests future experiments to search the double pion decays of Bs1(5830)B_{s1}(5830) and Bs2(5840)B_{s2}^*(5840) due to their sizable decay widths.

Keywords

Cite

@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

R2 v1 2026-06-21T11:57:40.061Z