1206.5158 (Chuan-Hung Chen et al.)

Direct CP Violation in Charm Decays due to Left-Right Mixing    [PDF]

Chuan-Hung Chen, Chao-Qiang Geng, Wei Wang

Motivated by the $3.8\sigma$ deviation from no CP violation hypothesis for the CP asymmetry (CPA) difference between $D^0\to K^+ K^-$ and $D^0\to \pi^+ \pi^-$, 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, in the non-manifest LR model we show that the large CPA difference could be explained, while the constraints from $(\epsilon'/\epsilon)_K$ and $D^0$-$\bar D^0$ are satisfied.

View original: http://arxiv.org/abs/1206.5158