1212.6404 (Alberto Lusiani et al.)

Search for $D^0 \to \ell^+\ell^-$ and $D^0 \to γγ$ at BaBar
and BESIII    [PDF]

Alberto Lusiani, for the BaBar Collaboration, for the BESIII Collaboration

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.

View original: http://arxiv.org/abs/1212.6404