Recent Results on Flavor Physics from BaBar

Abstract

We report an update to our previous measurement of the CKM element $|V_{ub}|$ using exclusive $B \rightarrow \pi \ell \nu$ decays. In the charm sector we have performed a measurement of $f_{Ds}$ using $D_s\rightarrow\tau^+\nu_{\tau}$ decays, we have measured the mixing parameter $y_{CP}$ using the lifetime ratio $\frac{\langle\tau_{K\pi}\rangle}{\langle\tau_{hh}\rangle}$ in $D^0$ decays, and we have also searched for CP violation using T-odd correlations in $D^0$ decays to $K^+K^-\pi^+\pi^-$. Finally, in the tau sector we have performed a search for the lepton flavor violating decays $\tau^\pm \rightarrow e^\pm \gamma$ and $\tau^\pm \rightarrow \mu^\pm \gamma$.