Direct CP violation in charm at Belle

Using the full data sample collected with the Belle detector at the KEKB asymmetric-energy e + e - collider, we have searched for CP violation of charmed mesons in D + → K 0 S π + and D 0 → h + h - decays, where h denotes K and π.We observe evidence for CP violation in D + → K 0 S π + decay with 3.2 standard deviations away from zero, (-0.363 ± 0.094 ± 0.067)%, while the asymmetry is consistent with the expected CP violation due to the neutral kaon in the final state.No evidence for CP violation in D 0 → h + h -is observed with A KK CP = (-0.32± 0.21 ± 0.09)% and A ππ CP = (+0.55± 0.36 ± 0.09)%.The CP asymmetry difference between D 0 → K + K -and D 0 → π + π - decays is also measured with ∆A hh CP = (-0.87± 0.41 ± 0.06)%, which is 2.1 standard deviations away from zero and supports recent LHCb and CDF measurements.