Description
The mu->e gamma decay represents one of the most sensitive probes towards new physics. It is in fact forbidden within the Standard Model, but new scenarios such as supersymmetry and grand-unified theories predict branching ratios for this process just below the present experimental limit (1.2 x 10^{-11}). A positive evidence would be an unambiguous signature of new physics, while improvements on the existing limit would constrain the parameter space of many models.
We present the latest results of the MEG experiment which is presently running at the most intense continuous muon beam at the Paul Scherrer Institut (Villigen, CH). Physics data taking started in 2008, and from the initial three months of data a 90% confidence level limit on the decay was set to 2.8x10^{-11}. In 2009, we collected more than twice this data set corresponding to a sensitivity of 6.1x10^{-12} on the branching ratio. The results of the analysis of the 2009 data will be presented together with the future prospects.