New constraint on the existence of the μ+→e +γ decay

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; Y. Fujii; L. Galli; F. Gatti; B. Golden; M. Grassi; A. Graziosi; D. N. Grigoriev; T. Haruyama; M. Hildebrandt; Y. Hisamatsu; F. Ignatov; T. Iwamoto; D. Kaneko; P. R. Kettle; B. I. Khazin; N. Khomotov; O. Kiselev; A. Korenchenko; N. Kravchuk; G. Lim; A. Maki; S. Mihara; W. Molzon; T. Mori; D. Mzavia; R. Nardò; H. Natori; D. Nicolò; H. Nishiguchi; Y. Nishimura; W. Ootani; M. Panareo; A. Papa; G. Piredda; A. Popov; F. Renga; E. Ripiccini; S. Ritt; M. Rossella; R. Sawada; F. Sergiampietri; G. Signorelli; S. Suzuki; F. Tenchini; C. Topchyan; Y. Uchiyama; C. Voena; F. Xiao; S. Yamada; A. Yamamoto; S. Yamashita; Z. You; Yu V. Yudin; D. Zanello

doi:10.1103/PhysRevLett.110.201801

New constraint on the existence of the μ⁺→e ⁺γ decay

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, Y. Fujii, L. Galli, F. Gatti, B. Golden, M. GrassiA. Graziosi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, D. Kaneko, P. R. Kettle, B. I. Khazin, N. Khomotov, O. Kiselev, A. Korenchenko, N. Kravchuk, G. Lim, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, R. Nardò, H. Natori, D. Nicolò, H. Nishiguchi, Y. Nishimura, W. Ootani, M. Panareo, A. Papa, G. Piredda, A. Popov, F. Renga, E. Ripiccini, S. Ritt, M. Rossella, R. Sawada, F. Sergiampietri, G. Signorelli, S. Suzuki, F. Tenchini, C. Topchyan, Y. Uchiyama, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Z. You, Yu V. Yudin, D. Zanello

Research output: Contribution to journal › Article › peer-review

474 Citations (Scopus)

Abstract

The analysis of a combined data set, totaling 3.6×1014 stopped muons on target, in the search for the lepton flavor violating decay μ⁺→e⁺γ is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7×10^-13 (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.

Original language	English
Article number	201801
Journal	Physical review letters
Volume	110
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.110.201801
Publication status	Published - 2013 May 13
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.110.201801

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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., Fujii, Y., Galli, L., Gatti, F., Golden, B., ... Zanello, D. (2013). New constraint on the existence of the μ⁺→e ⁺γ decay. Physical review letters, 110(20), [201801]. https://doi.org/10.1103/PhysRevLett.110.201801

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, Fujii, Y, Galli, L, Gatti, F, Golden, B, Grassi, M, Graziosi, A, Grigoriev, DN, Haruyama, T, Hildebrandt, M, Hisamatsu, Y, Ignatov, F, Iwamoto, T, Kaneko, D, Kettle, PR, Khazin, BI, Khomotov, N, Kiselev, O, Korenchenko, A, Kravchuk, N, Lim, G, Maki, A, Mihara, S, Molzon, W, Mori, T, Mzavia, D, Nardò, R, Natori, H, Nicolò, D, Nishiguchi, H, Nishimura, Y, Ootani, W, Panareo, M, Papa, A, Piredda, G, Popov, A, Renga, F, Ripiccini, E, Ritt, S, Rossella, M, Sawada, R, Sergiampietri, F, Signorelli, G, Suzuki, S, Tenchini, F, Topchyan, C, Uchiyama, Y, Voena, C, Xiao, F, Yamada, S, Yamamoto, A, Yamashita, S, You, Z, Yudin, YV & Zanello, D 2013, 'New constraint on the existence of the μ⁺→e ⁺γ decay', Physical review letters, vol. 110, no. 20, 201801. https://doi.org/10.1103/PhysRevLett.110.201801

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title = "New constraint on the existence of the μ+→e +γ decay",

abstract = "The analysis of a combined data set, totaling 3.6×1014 stopped muons on target, in the search for the lepton flavor violating decay μ+→e+γ is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7×10-13 (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.",

author = "J. Adam and X. Bai and Baldini, {A. M.} and E. Baracchini and C. Bemporad and G. Boca and Cattaneo, {P. W.} and G. Cavoto and F. Cei and C. Cerri and {De Bari}, A. and {De Gerone}, M. and T. Doke and S. Dussoni and J. Egger and Y. Fujii and L. Galli and F. Gatti and B. Golden and M. Grassi and A. Graziosi and Grigoriev, {D. N.} and T. Haruyama and M. Hildebrandt and Y. Hisamatsu and F. Ignatov and T. Iwamoto and D. Kaneko and Kettle, {P. R.} and Khazin, {B. I.} and N. Khomotov and O. Kiselev and A. Korenchenko and N. Kravchuk and G. Lim and A. Maki and S. Mihara and W. Molzon and T. Mori and D. Mzavia and R. Nard{\`o} and H. Natori and D. Nicol{\`o} and H. Nishiguchi and Y. Nishimura and W. Ootani and M. Panareo and A. Papa and G. Piredda and A. Popov and F. Renga and E. Ripiccini and S. Ritt and M. Rossella and R. Sawada and F. Sergiampietri and G. Signorelli and S. Suzuki and F. Tenchini and C. Topchyan and Y. Uchiyama and C. Voena and F. Xiao and S. Yamada and A. Yamamoto and S. Yamashita and Z. You and Yudin, {Yu V.} and D. Zanello",

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T1 - New constraint on the existence of the μ+→e +γ decay

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 - Fujii, Y.

AU - Galli, L.

AU - Gatti, F.

AU - Golden, B.

AU - Grassi, M.

AU - Graziosi, A.

AU - Grigoriev, D. N.

AU - Haruyama, T.

AU - Hildebrandt, M.

AU - Hisamatsu, Y.

AU - Ignatov, F.

AU - Iwamoto, T.

AU - Kaneko, D.

AU - Kettle, P. R.

AU - Khazin, B. I.

AU - Khomotov, N.

AU - Kiselev, O.

AU - Korenchenko, A.

AU - Kravchuk, N.

AU - Lim, G.

AU - Maki, A.

AU - Mihara, S.

AU - Molzon, W.

AU - Mori, T.

AU - Mzavia, D.

AU - Nardò, R.

AU - Natori, H.

AU - Nicolò, D.

AU - Nishiguchi, H.

AU - Nishimura, Y.

AU - Ootani, W.

AU - Panareo, M.

AU - Papa, A.

AU - Piredda, G.

AU - Popov, A.

AU - Renga, F.

AU - Ripiccini, E.

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 - Voena, C.

AU - Xiao, F.

AU - Yamada, S.

AU - Yamamoto, A.

AU - Yamashita, S.

AU - You, Z.

AU - Yudin, Yu V.

AU - Zanello, D.

PY - 2013/5/13

Y1 - 2013/5/13

N2 - The analysis of a combined data set, totaling 3.6×1014 stopped muons on target, in the search for the lepton flavor violating decay μ+→e+γ is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7×10-13 (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.

AB - The analysis of a combined data set, totaling 3.6×1014 stopped muons on target, in the search for the lepton flavor violating decay μ+→e+γ is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7×10-13 (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.

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U2 - 10.1103/PhysRevLett.110.201801

DO - 10.1103/PhysRevLett.110.201801

M3 - Article

AN - SCOPUS:84877808080

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 201801

ER -

New constraint on the existence of the μ⁺→e ⁺γ decay

Abstract

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