Direct CP violation in charm decays due to left–right mixing

Abstract

Motivated by the 3.8σ deviation from no CP violation hypothesis for the CP asymmetry (CPA) difference between D0→K+K− and D0→π+π−, reported recently by LHCb and CDF, we investigate the CP violating effect due to the left–right (LR) mixing in the general LR symmetric model. In particular, we show that the large CPA difference could be explained in the non-manifest LR model.