Search for the lepton flavour violating decay μ^+ → e^+ γ with the full dataset of the MEG experiment
- Baldini, A. M.
- Bao, Y.
- Baracchini, E.
- Bemporad, C.
- Berg, F.
- Biasotti, M.
- Boca, G.
- Cascella, M.
- Cattaneo, P. W.
- Cavoto, G.
- Cei, F.
- Cerri, C.
- Corvaglia, A.
- de Bari, A.
- De Gerone, M.
- Doke, T.
- D’Onofrio, A.
- Dussoni, S.
- Egger, J.
- Fujii, Y.
- Galli, L.
- Gatti, F.
- Grancagnolo, F.
- Grassi, M.
- Graziosi, A.
- Grigoriev, D. N.
- Haruyama, T.
- Hildebrandt, M.
- Hodge, Z.
- Ieki, K.
- Ignatov, F.
- Iwamoto, T.
- Kaneko, D.
- Kang, T. I.
- Kettle, P. R.
- Khazin, B. I.
- Khomutov, N.
- Korenchenko, A.
- Kravchuk, N.
- Lim, G. M. A.
- Maki, A.
- Mihara, S.
- Molzon, W.
- Mori, Toshinori
- Morsani, F.
- Mtchedilishvili, A.
- Mzavia, D.
- Nakaura, S.
- Nardò, R.
- Nicolò, D.
- Nishiguchi, H.
- Nishimura, M.
- Ogawa, S.
- Ootani, W.
- Orito, S.
- Papa, A.
- Pazzi, R.
- Piredda, G.
- Pizzigoni, G.
- Popov, A.
- Raffaelli, F.
- Renga, F.
- Ripiccini, E.
- Ritt, S.
- Rossella, M.
- Rutar, G.
- Sawada, R.
- Sergiampietri, F.
- Signorelli, G.
- Simonetta, M.
- Tenchini, F.
- Uchiyama, Y.
- Venturini, M.
- Voena, C.
- Yamamoto, A.
- Yoshida, K.
- You, Z.
- Yudin, Y.u. V.
- Zanello, D.
- CHIARELLO, GIANLUIGI
- CHIRI, CLAUDIO
- PANAREO, Marco
- PEPINO, AURORA
- TASSIELLI, GIOVANNI FRANCESCO
Publication date
January 2016
DOI Publisher
Springer Science and Business Media LLCAbstract
The final results of the search for the lepton flavour violating decay μ^+ → e^+ γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009–2013 and totalling 7.5x10^14 stopped muons on target are presented. No significant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ^+ → e^+ γ)<4.2x10^-13 (90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date
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