New limit on the lepton-flavor-violating decay μ+→e +γ

J. Adam; X. Bai; A. M. Baldini; E. Baracchini; C. Bemporad; G. Boca; P. W. Cattaneo; G. Cavoto; F. Cei; C. Cerri; A. De Bari; M. De Gerone; T. Doke; S. Dussoni; J. Egger; K. Fratini; Y. Fujii; L. Galli; G. Gallucci; F. Gatti; B. Golden; M. Grassi; D. N. Grigoriev; T. Haruyama; M. Hildebrandt; Y. Hisamatsu; F. Ignatov; T. Iwamoto; P. R. Kettle; B. I. Khazin; O. Kiselev; A. Korenchenko; N. Kravchuk; A. Maki; S. Mihara; W. Molzon; T. Mori; D. Mzavia; H. Natori; D. Nicolò; H. Nishiguchi; Y. Nishimura; W. Ootani; M. Panareo; A. Papa; R. Pazzi; G. Piredda; A. Popov; F. Renga; S. Ritt; M. Rossella; R. Sawada; F. Sergiampietri; G. Signorelli; S. Suzuki; F. Tenchini; C. Topchyan; Y. Uchiyama; R. Valle; C. Voena; F. Xiao; S. Yamada; A. Yamamoto; S. Yamashita; Yu V. Yudin; D. Zanello

doi:10.1103/PhysRevLett.107.171801

New limit on the lepton-flavor-violating decay μ⁺→e ⁺γ

J. Adam, X. Bai, A. M. Baldini, E. Baracchini, C. Bemporad, G. Boca, P. W. Cattaneo, G. Cavoto, F. Cei, C. Cerri, A. De Bari, M. De Gerone, T. Doke, S. Dussoni, J. Egger, K. Fratini, Y. Fujii, L. Galli, G. Gallucci, F. GattiB. Golden, M. Grassi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, P. R. Kettle, B. I. Khazin, O. Kiselev, A. Korenchenko, N. Kravchuk, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, H. Natori, D. Nicolò, H. Nishiguchi, Y. Nishimura, W. Ootani, M. Panareo, A. Papa, R. Pazzi, G. Piredda, A. Popov, F. Renga, S. Ritt, M. Rossella, R. Sawada, F. Sergiampietri, G. Signorelli, S. Suzuki, F. Tenchini, C. Topchyan, Y. Uchiyama, R. Valle, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Yu V. Yudin, D. Zanello

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232 Citations (Scopus)

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 μ⁺→e⁺γ. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8×1014 muon decays, gives a 90% C.L. upper limit of 2.4×10 ^-12 on the branching ratio of the μ⁺→e ⁺γ decay, constituting the most stringent limit on the existence of this decay to date.

Original language	English
Article number	171801
Journal	Physical review letters
Volume	107
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.107.171801
Publication status	Published - 2011 Oct 17
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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Adam, J., Bai, X., Baldini, A. M., Baracchini, E., Bemporad, C., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., De Bari, A., De Gerone, M., Doke, T., Dussoni, S., Egger, J., Fratini, K., Fujii, Y., Galli, L., Gallucci, G., ... Zanello, D. (2011). New limit on the lepton-flavor-violating decay μ⁺→e ⁺γ. Physical review letters, 107(17), Article 171801. https://doi.org/10.1103/PhysRevLett.107.171801

Adam, J, Bai, X, Baldini, AM, Baracchini, E, Bemporad, C, Boca, G, Cattaneo, PW, Cavoto, G, Cei, F, 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, Nicolò, D, 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, F, Topchyan, C, Uchiyama, Y, Valle, R, Voena, C, Xiao, F, Yamada, S, Yamamoto, A, Yamashita, S, Yudin, YV & Zanello, D 2011, 'New limit on the lepton-flavor-violating decay μ⁺→e ⁺γ', Physical review letters, vol. 107, no. 17, 171801. https://doi.org/10.1103/PhysRevLett.107.171801

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title = "New limit on the lepton-flavor-violating decay μ+→e +γ",

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 μ+→e+γ. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8×1014 muon decays, gives a 90% C.L. upper limit of 2.4×10 -12 on the branching ratio of the μ+→e +γ decay, constituting the most stringent limit on the existence of this decay to date.",

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T1 - New limit on the lepton-flavor-violating decay μ+→e +γ

AU - Adam, J.

AU - Bai, X.

AU - Baldini, A. M.

AU - Baracchini, E.

AU - Bemporad, C.

AU - Boca, G.

AU - Cattaneo, P. W.

AU - Cavoto, G.

AU - Cei, F.

AU - Cerri, C.

AU - De Bari, A.

AU - De Gerone, M.

AU - Doke, T.

AU - Dussoni, S.

AU - Egger, J.

AU - Fratini, K.

AU - Fujii, Y.

AU - Galli, L.

AU - Gallucci, G.

AU - Gatti, F.

AU - Golden, B.

AU - Grassi, M.

AU - Grigoriev, D. N.

AU - Haruyama, T.

AU - Hildebrandt, M.

AU - Hisamatsu, Y.

AU - Ignatov, F.

AU - Iwamoto, T.

AU - Kettle, P. R.

AU - Khazin, B. I.

AU - Kiselev, O.

AU - Korenchenko, A.

AU - Kravchuk, N.

AU - Maki, A.

AU - Mihara, S.

AU - Molzon, W.

AU - Mori, T.

AU - Mzavia, D.

AU - Natori, H.

AU - Nicolò, D.

AU - Nishiguchi, H.

AU - Nishimura, Y.

AU - Ootani, W.

AU - Panareo, M.

AU - Papa, A.

AU - Pazzi, R.

AU - Piredda, G.

AU - Popov, A.

AU - Renga, F.

AU - Ritt, S.

AU - Rossella, M.

AU - Sawada, R.

AU - Sergiampietri, F.

AU - Signorelli, G.

AU - Suzuki, S.

AU - Tenchini, F.

AU - Topchyan, C.

AU - Uchiyama, Y.

AU - Valle, R.

AU - Voena, C.

AU - Xiao, F.

AU - Yamada, S.

AU - Yamamoto, A.

AU - Yamashita, S.

AU - Yudin, Yu V.

AU - Zanello, D.

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AB - 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 μ+→e+γ. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8×1014 muon decays, gives a 90% C.L. upper limit of 2.4×10 -12 on the branching ratio of the μ+→e +γ decay, constituting the most stringent limit on the existence of this decay to date.

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JO - Physical review letters

JF - Physical review letters

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M1 - 171801

ER -

New limit on the lepton-flavor-violating decay μ⁺→e ⁺γ

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