Speaker
Description
The MUonE experiment at CERN aims to determine the leading-order hadronic vacuum polarization contribution to the Standard Model prediction of the muon anomalous magnetic moment $a_{µ}$, which plays a central role in the present differences among theoretical determinations and in the comparison with experimental measurements. MUonE follows an innovative approach based on a precise measurement of the shape of the differential cross section for elastic scattering of 160 GeV muons on atomic electrons in a low-Z target, providing direct sensitivity to the hadronic contribution to the running of the electromagnetic coupling $\alpha$ in the space-like region. A test run was carried out in 2025 with a reduced detector configuration. An overview of the experiment will be given, and first preliminary results from the 2025 data taking will be presented.