Color-octet contribution and direct CP violation in B → ψ(ψ′)X

We study cc color-octet contribution to B → ψ(ψ′)X. When this contribution is included, the theoretical predictions for the branching ratios become in much better agreement with the experiment. This mechanism also enhances the partial rate asymmetries by about a factor of five. The inclusive ψ(ψ′) resulting from b → d + gluon can have asymmetry around a few percent whereas those from b → s + gluon has it around 4 × 10−4. The asymmetry in the former modes should be observable, to a significance of 3σ, with about (1–10) × 108B mesons.