MUonE

MUonE is an experimental proposal at CERN. It is a high-precision experiment with the aim of measuring the hadronic component to the running of the QED coupling constant, through the study of the scattering of high-energy muons on fixed-target electrons.

In turn, the measurement can be exploited to provide a new and independent theoretical prediction of the hadronic contribution to the muon anomalous magnetic moment (g-2)_µ, contribution whose error dominates the theoretical uncertainty when comparing the (g-2)_µexperimental measurements and its prediction within the Standard Model.
Currently, a discrepancy of more than 4 standard deviations is present, which could indicate physics beyond the Standard Model, if the theory confirms beyond any doubt its predictions.

The HEP group in Pavia is among the proponents of the experiment and it is actively working to develop a high-precision Monte Carlo event generator for experimental simulations and for future analysis of MUonE data.