B → ρ(ω, ø)η(′) Decays and NLO Contributions in pQCD Approach

Abstract

By employing the perturbative QCD (pQCD) factorization approach, we calculate some important next-to-leading-order (NLO) contributions to the two-body charmless hadronic decays B+ → ρ+ η(′) and B0 → ρ0 (ω, ø)η(′), induced by the vertex QCD corrections, the quark-loops as well as the chromo-magnetic penguins. From the numerical results and phenomenological analysis we find that (a) for B± → ρ±η(′) (B0 → ρ0 (ω, ø)η(′) decays, the partial NLO contributions to branching ratios are small (large) in magnitude; and (b) the pQCD predictions for ACPdir(B± → ρ±η(′)) are consistent with the data, while the predicted ACP(B0 → ρ0(ω)η(′)) are generally large in magnitude and could be tested by the forthcoming LHCb experiments.