We present a new result based on an analysis of the data collected by the MEG detector at the Paul Scherrer Institut in 2009 and 2010, in search of the lepton-flavor-violating decay mu(+)e(+)gamma. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8*10(14) muon decays, gives a 90% C.L. upper limit of 2.4*10(-12) on the branching ratio of the mu(+)e(+)gamma decay, constituting the most stringent limit on the existence of this decay to date.

New Limit on the Lepton-Flavor-Violating Decay mu(+) -> e(+)gamma

CEI, FABRIZIO;NICOLO', DONATO;Papa A;TENCHINI, FRANCESCO;
2011-01-01

Abstract

We present a new result based on an analysis of the data collected by the MEG detector at the Paul Scherrer Institut in 2009 and 2010, in search of the lepton-flavor-violating decay mu(+)e(+)gamma. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8*10(14) muon decays, gives a 90% C.L. upper limit of 2.4*10(-12) on the branching ratio of the mu(+)e(+)gamma decay, constituting the most stringent limit on the existence of this decay to date.
2011
Adam, J; Bai, X; Baldini, Am; Baracchini, E; Bemporad, C; Boca, G; Cattaneo, Pw; Cavoto, G; Cei, Fabrizio; Cerri, C; de Bari, A; De Gerone, M; Doke, T; Dussoni, S; Egger, J; Fratini, K; Fujii, Y; Galli, L; Gallucci, G; Gatti, F; Golden, B; Grassi, M; Grigoriev, Dn; Haruyama, T; Hildebrandt, M; Hisamatsu, Y; Ignatov, F; Iwamoto, T; Kettle, Pr; Khazin, Bi; Kiselev, O; Korenchenko, A; Kravchuk, N; Maki, A; Mihara, S; Molzon, W; Mori, T; Mzavia, D; Natori, H; Nicolo', Donato; Nishiguchi, H; Nishimura, Y; Ootani, W; Panareo, M; Papa, A; Pazzi, R; Piredda, G; Popov, A; Renga, F; Ritt, S; Rossella, M; Sawada, R; Sergiampietri, F; Signorelli, G; Suzuki, S; Tenchini, Francesco; Topchyan, C; Uchiyama, Y; Valle, R; Voena, C; Xiao, F; Yamada, S; Yamamoto, A; Yamashita, S; Yudin, Yv; Zanello, D.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/193144
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