Study of scalar meson a ₀ (980) from B → a ₀ (980)π decays

Abstract

In this paper, we calculate the branching ratios and the direct C P-violating asymmetries for decays by employing the perturbative QCD (pQCD) factorization approach at the leading order. We found that (a) the pQCD predictions for the branching ratios are around (0.4–2.8) × 10−6, consistent with currently available experimental upper limits; (b) the C P asymmetries of decays can be large, about (70–80)% for α = 100°.

Branching ratio and CP asymmetry of B s →K * 0 (1430)η (′) decays in the PQCD approach

“…where φ=39.3 • ±1.0 • . In order to uncover the inner structures of the scalar mesons, many factorization approaches are used to research the B meson decay modes with a final state scalar meson, such as the generalized factorization approach [10], QCD factorization (QCDF) approach [11][12][13], and perturbative QCD (PQCD) approach [14][15][16]. The decays B → K * 0 0 (1430)η ( ) have been studied using QCDF by Cheng and Chua [17].…”