Speaker
Description
This contribution reports the latest result of the search for the charged lepton flavor violating decay μ+ → e+γ undertaken at the Paul Scherrer Institut in Switzerland with the MEG II experiment using the data collected in the 2021–2022 physics runs. The sensitivity of this search is 2.2 × 10−13, a factor of 2.4 better than the one with the full dataset of MEG and it was obtained in a data taking time about one fourth of the MEG one. The result is consistent with the expected background, yielding an upper limit on the branching ratio of B(μ+ → e+γ) < 1.5 × 10−13 (90% C.L.). Additional improvements are expected with the data collected during the years 2023–2024. The data-taking will continue in the coming years, and the prospects of the experiment as well as the recent X17 search result by the MEG II apparatus are also discussed.
