Search for D0 - D0bar Mixing and Rare Charm Decays

Abstract

Based on a dataset acquired by the BaBar experiment running on and near the ${\rm Y}(4S)$ resonance from 1999-2002, limits are set on the rate of $D^0$-- $\bar{D}{}^0$ mixing using the decay mode $D^{\ast +}\to D^0{\pi }^{+}$, followed by a semi-leptonic decay of the $D^0$. Results are compared to previous BaBar analysis using hadronic decays. We also report on a search for the flavor-changing neutral current decays $D^0\to e^{+}{e}^{-}$ (${\mu }^{+}{\mu }^{-}$) and the lepton-flavor violation decays $D^0\to e^{\pm }{\mu }^{\mp }$.

arXiv comment4 pages, 4 postscript figues, Proceedings of 5th Rencontres du Vietnam