Details

Autor(en) / Beteiligte

• Afanaciev, K.
• Baldini, A. M.
• Ban, S.
• Baranov, V.
• Benmansour, H.
• Biasotti, M.
• Boca, G.
• Cattaneo, P. W.
• Cavoto, G.
• Cei, F.
• Chiappini, M.
• Chiarello, G.
• Corvaglia, A.
• Cuna, F.
• Maso, G. Dal
• De Bari, A.
• De Gerone, M.
• Barusso, L. Ferrari
• Francesconi, M.
• Galli, L.
• Gallucci, G.
• Gatti, F.
• Gerritzen, L.
• Grancagnolo, F.
• Grandoni, E. G.
• Grassi, M.
• Grigoriev, D. N.
• Hildebrandt, M.
• Ieki, K.
• Ignatov, F.
• Ikeda, F.
• Iwamoto, T.
• Karpov, S.
• Kettle, P.-R.
• Khomutov, N.
• Kobayashi, S.
• Kolesnikov, A.
• Kravchuk, N.
• Krylov, V.
• Kuchinskiy, N.
• Kyle, W.
• Libeiro, T.
• Malyshev, V.
• Matsushita, A.
• Meucci, M.
• Mihara, S.
• Molzon, W.
• Mori, Toshinori
• Nakao, M.
• Nicolò, D.
• Nishiguchi, H.
• Ochi, A.
• Ogawa, S.
• Onda, R.
• Ootani, W.
• Oya, A.
• Palo, D.
• Panareo, M.
• Papa, A.
• Pettinacci, V.
• Popov, A.
• Renga, F.
• Ritt, S.
• Rossella, M.
• Rozhdestvensky, A.
• Schwendimann, P.
• Shimada, K.
• Signorelli, G.
• Takahashi, M.
• Tassielli, G. F.
• Toyoda, K.
• Uchiyama, Y.
• Usami, M.
• Venturini, A.
• Vitali, B.
• Voena, C.
• Yamamoto, K.
• Yanai, K.
• Yonemoto, T.
• Yoshida, K.
• Yudin, Yu. V.

Titel

A search for μ+→e+γ with the first dataset of the MEG II experiment

Ist Teil von

• The European physical journal. C, Particles and fields, 2024-03, Vol.84 (3), p.216

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 - 13 (90% CL). The combination of this result and the limit obtained by MEG gives B ( μ + → e + γ ) < 3.1 × 10 - 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.