The search for $D^0\to e^{\pm }{\mu }^{\mp }$

Abstract

An overview is presented of a method to search for $D^0\to e^{\pm }{\mu }^{\mp }$ with LHCb data. In order to reduce combinatorial backgrounds, tagged $D^0$ candidates from the decay $D^{\ast +}\to D^0{\pi }^{+}$ are used. This measurement is performed with respect to $\mathcal{B}\left(D^0\to {\pi }^{+}{\pi }^{-}\right)$, which cancels uncertainties in the luminosity and $D^{\ast +}$ production cross-section. It is estimated that using $3{\mathrm{fb}}^{-1}$ of LHCb data an upper limit can be attained of $\mathcal{O}\left(10^{-7}\right)$ at a $90\%$ confidence level.

To appear in the proceedings of The 6th International Workshop on Charm Physics (CHARM 2013)