Search for $D^0\to {\ell }^{+}{\ell }^{-}$ and $D^0\to \gamma \gamma$ at BaBar and BESIII

Abstract

Three searches for rare decays of the charmed $D^0$ meson are presented: a search for $D^0\to {\ell }^{+}{\ell }^{-}$ published by the BaBar collaboration using about 468 fb${}^{-1}$ of data and two searches for $D^0\to \gamma \gamma$, one published by the BaBar collaboration using about 470 fb${}^{-1}$ of data, and a second one presented as a preliminary result by the BESIII collaboration using approximately 2.9 fb${}^{-1}$. No statistically significant signal has been found, in agreement with the Standard Model predictions.

arXiv comment5 pages, 1 figure, Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 2012