Direct CP violation for Bs0→K0π+π- decay in QCD factorization

In the framework of QCD factorization, based on the first order of isospin violation, we study direct CP violation in the decay of Bs0→K0ρ0(ω)→K0π+π-, including the effect of ρ-ω mixing. We find that the CP violating asymmetry is large via the ρ-ω mixing mechanism when the invariant mass of the π+π- pair is in the vicinity of the ω resonance. For the decay of Bs0→K0ρ0(ω)→K0π+π-, the maximum CP violating asymmetries can reach about 46%. We also discuss the possibility to observe the predicted CP violating asymmetries at the LHC.