A search for μ^+\to e^+γ with the first dataset of the MEG II experiment

The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay \mu^+\to e^+\gamma from data taken in the first physics run in 2021. No excess of events over the expected background is observed, yielding an upper limit on the branching... Show more