Branching Ratio and CP Asymmetry of B_s \to K^*_0(1430)πDecays in the PQCD Approach

Abstract

In the two-quark model supposition for $K_0^{\ast }(1430)$, the branching ratios and the direct CP-violating asymmetries for decays ${\bar{B}}_s^0\to K_0^{\ast 0}(1430){\pi }^0,K_0^{\ast +}(1430){\pi }^{-}$ are studied by employing the perturbative QCD factorization approach. We find that although these two decays are both tree-dominated, the ratio of their penguin to tree contributions are very different: there is only a few percent for the decay ${\bar{B}}_s^0\to K_0^{\ast +}(1430){\pi }^{-}$, while about 37% in scenario I, even 51% in scenario II for the decay ${\bar{B}}_s^0\to K_0^{\ast 0}(1430){\pi }^0$. It results that these two decays have very different values in the branching ratios and the direct CP asymmetries. The branching ratio of the decay ${\bar{B}}_s^0\to K_0^{\ast +}(1430){\pi }^{-}$ is at the order of $10^{-5}$, and its direct CP asymmetry is about (20-30)%. While for the decay ${\bar{B}}_s^0\to K_0^{\ast 0}(1430){\pi }^0$, its direct CP-violating asymmetry is very large and about 90%, but it is difficult to measure it, because the branching ratio for this channel is small and only $10^{-7}$ order.

8pages, 2figures

References in corpus (7)

• Charmless non-leptonic B_s decays to PP, PV and VV final states in the pQCD approach
• Charmless B decays to a scalar meson and a vector meson
• Study of scalar meson f_0(980) and K_0^*(1430) from B \to f_0(980)ρ(ω, ϕ) and B \to K^*_0(1430)ρ(ω) Decays
• Study of scalar meson $a_0(980)$ from $B\to a_0(980)\pi$ Decays
• Probing new physics in B -> f_0(980) K decays
• Study of f_0(980) and f_0(1500) from B_s \to f_0(980)K, f_0(1500)K Decays
• Study of f_0(980) and f_0(1500) from B_s \to f_0(980)π, f_0(1500)πDecays

Cited by in corpus (3)

• Branching Ratios and CP Violations of B \to K_0^*(1430) K^* Decays in the pQCD Approach
• Study of $B_{u,d,s}\to K_0^{\ast }(1430)P$ and $K_0^{\ast }(1430)V$ decays within QCD factorization
• $B_{(s)}\to D_{s0}^{\ast }(2317)P(V)$ decays in perturbative QCD approach