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 & 46 others 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, Yasuhiro 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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212 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 languageEnglish
Article number171801
JournalPhysical Review Letters
Volume107
Issue number17
DOIs
Publication statusPublished - 2011 Oct 17
Externally publishedYes

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leptons
decay
muons
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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Adam, J., Bai, X., Baldini, A. M., Baracchini, E., Bemporad, C., Boca, G., ... Zanello, D. (2011). New limit on the lepton-flavor-violating decay μ+→e +γ. Physical Review Letters, 107(17), [171801]. https://doi.org/10.1103/PhysRevLett.107.171801

New limit on the lepton-flavor-violating decay μ+→e +γ. / 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.; Gatti, F.; Golden, B.; Grassi, M.; Grigoriev, D. N.; Haruyama, T.; Hildebrandt, M.; Hisamatsu, Y.; Ignatov, F.; Iwamoto, T.; Kettle, P. R.; Khazin, B. I.; Kiselev, O.; Korenchenko, A.; Kravchuk, N.; Maki, A.; Mihara, S.; Molzon, W.; Mori, T.; Mzavia, D.; Natori, H.; Nicolò, D.; Nishiguchi, H.; Nishimura, Yasuhiro; 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, Yu V.; Zanello, D.

In: Physical Review Letters, Vol. 107, No. 17, 171801, 17.10.2011.

Research output: Contribution to journalArticle

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
Adam J, Bai X, Baldini AM, Baracchini E, Bemporad C, Boca G et al. New limit on the lepton-flavor-violating decay μ+→e +γ. Physical Review Letters. 2011 Oct 17;107(17). 171801. https://doi.org/10.1103/PhysRevLett.107.171801
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. ; Gatti, F. ; Golden, B. ; Grassi, M. ; Grigoriev, D. N. ; Haruyama, T. ; Hildebrandt, M. ; Hisamatsu, Y. ; Ignatov, F. ; Iwamoto, T. ; Kettle, P. R. ; Khazin, B. I. ; Kiselev, O. ; Korenchenko, A. ; Kravchuk, N. ; Maki, A. ; Mihara, S. ; Molzon, W. ; Mori, T. ; Mzavia, D. ; Natori, H. ; Nicolò, D. ; Nishiguchi, H. ; Nishimura, Yasuhiro ; 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, Yu V. ; Zanello, D. / New limit on the lepton-flavor-violating decay μ+→e +γ. In: Physical Review Letters. 2011 ; Vol. 107, No. 17.
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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, Yasuhiro

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.

PY - 2011/10/17

Y1 - 2011/10/17

N2 - 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.

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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DO - 10.1103/PhysRevLett.107.171801

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VL - 107

JO - Physical Review Letters

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