Электронный каталог

Статья

Afanaciev, K.
A Search for *m*+*>e*+*g with the First Dataset of the MEG II Experiment / K.Afanaciev, V.Baranov, N.Khomutov, A.Kolesnikov, N.Kravchuk, V.Krylov, N.Kuchinskiy, V.Malyshev, A.Rozhdestvensky, [a.o.] // The European Physical Journal C [Electronic resource]. – 2024. – Vol. 84, No. 3. – P. 216. – URL: https://doi.org/10.1140/epjc/s10052-024-12416-2. – Bibliogr.: 19.

The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay μ*+ → e*+γ 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 ratio of B(μ*+ → e*+γ) < 7.5 × 10&sup(−13) (90% CL). The combination of this result and the limit obtained by MEG gives B(μ*+ → e*+γ) < 3.1 × 10&sup(−13) (90% CL), which is the most stringent limit to date. A ten-fold larger sample of data is being collected during the years 2022–2023, and data-taking will continue in the coming years.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.3а - Основные свойства мю-мезонов: масса, типы и времена распадов
Бюллетени = 25/024