Corrections to sin(2β) from CP asymmetries in B0→(π0,ρ0,η,η′,ω,ϕ)KS decays

Neglecting smaller amplitudes the time-dependent CP asymmetry in penguin-dominated b→sqq¯ transitions (such as B→ϕKS) is expected to equal ±sin(2β), an expectation not borne out by the present average experimental data. I compute and discuss the correction due to the smaller amplitudes in the framework of QCD factorization.