Exploring new physics contributions to $CP$ violation in ${\tau }^{-}\to K^{-}{\pi }^0{\nu }_{\tau }$

David Delepine, Gaber Faisel, Carlos A. Ramirez

A general analysis of possible violation of CP in processes like $\tau \to K\pi \nu$, for unpolarized $\tau$ is presented. In this paper, we derive the new contributions to the effective Hamil…