Eur. Phys. J. C 69, 433-443 (2010)
https://doi.org/10.1140/epjc/s10052-010-1422-3

Study of f ₀(980) and f ₀(1500) from B _s →f ₀(980)π,f ₀(1500)π decays

Department of Physics, Henan University of Technology, Zhengzhou, Henan, 450052, P.R. China

zhangzhiqing@haut.edu.cn

Received: 6 May 2010
Revised: 30 July 2010
Published online: 15 September 2010

Abstract

In this paper, we analyze the scalar mesons f ₀(980) and f ₀(1500) from the decays within Perturbative QCD approach. From the leading-order calculations, we find that (a) in the allowed mixing angle ranges, the branching ratio of is about (1.0∼1.6)×10⁻⁷, which is smaller than that of (the difference is a few times even one order); (b) the decay is better to distinguish between the lowest lying state or the first excited state for f ₀(1500), because the branching ratios for two scenarios have about one-order difference in most of the mixing angle ranges; and (c) the direct CP asymmetries of for two scenarios also exists great difference. In scenario II, the variation range of the value according to the mixing angle in scenario II is very small, except for the values for mixing angles near 90° or 270°, while the variation range of in scenario I is very large. Compared with the future data for the decay , it is easy to determine the nature of the scalar meson f ₀(1500).