Latest results from MEG

We present the status and the perspectives of the MEG experiment which searched for the Lepton Flavour Violating decay µ+→ e+γ for several years. In the full dataset corresponding to 7.4× 1014positive muons stopped on target we didn’t find any evidence for this decay and we set an upper bound on the µ+→ e+γ branching ratio of 4.2×10−13at 90% C.L., with a sensitivity of 5.3×10−13, which improves our previous world best limit by a factor of 1.5 and the best limit set by past experiments by a factor of 30. On the basis of the experience gained in MEG phase I we elaborated an upgrade plan of our detector, which was approved by the host laboratory and is presently in setting-up stage. We discuss here the status of the MEG upgrade (MEG II), which aims to improve the experimental sensitivity by a further order of magnitude.