Published 2024
| Version v1
Publication
A search for $$\upmu ^+ \rightarrow \textrm{e}^+ \upgamma $$ with the first dataset of the MEG II experiment
Creators
- 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.
- Ferrari Barusso, L.
- 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.
- null, null
Contributors
Others:
- 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.
- Ferrari Barusso, L.
- 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.
- Null, Null
Description
The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay mu(+)-> 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 ratio of B (mu(+)-> e(+)gamma) <7.5x10(-13) (90% CL). The combination of this result and the limit obtained by MEG gives B (mu(+)-> e(+)gamma) <3.1x10(-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.
Additional details
Identifiers
- URL
- https://hdl.handle.net/11567/1178095
- URN
- urn:oai:iris.unige.it:11567/1178095
Origin repository
- Origin repository
- UNIGE