A limit for the μ→eγ decay from the MEG experiment

J. Adam; X. Bai; A. Baldini; E. Baracchini; A. Barchiesi; C. Bemporad; G. Boca; P. W. Cattaneo; G. Cavoto; G. Cecchet; F. Cei; C. Cerri; A. De Bari; M. De Gerone; T. Doke; S. Dussoni; J. Egger; L. Galli; G. Gallucci; F. Gatti; B. Golden; M. Grassi; D. N. Grigoriev; T. Haruyama; M. Hildebrandt; Y. Hisamatsu; F. Ignatov; T. Iwamoto; D. Kaneko; P. R. Kettle; B. I. Khazin; O. Kiselev; A. Korenchenko; N. Kravchuk; A. Maki; S. Mihara; W. Molzon; T. Mori; D. Mzavia; H. Natori; R. Nardò; 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; M. Schneebeli; F. Sergiampietri; G. Signorelli; S. Suzuki; C. Topchyan; V. Tumakov; Y. Uchiyama; R. Valle; C. Voena; F. Xiao; S. Yamada; A. Yamamoto; S. Yamashita; Yu V. Yudin; D. Zanello

doi:10.1016/j.nuclphysb.2010.03.030

A limit for the μ→eγ decay from the MEG experiment

J. Adam, X. Bai, A. Baldini, E. Baracchini, A. Barchiesi, C. Bemporad, G. Boca, P. W. Cattaneo, G. Cavoto, G. Cecchet, F. Cei, C. Cerri, A. De Bari, M. De Gerone, T. Doke, S. Dussoni, J. Egger, L. Galli, G. Gallucci, F. GattiB. Golden, M. Grassi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, D. Kaneko, P. R. Kettle, B. I. Khazin, O. Kiselev, A. Korenchenko, N. Kravchuk, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, H. Natori, R. Nardò, 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, M. Schneebeli, F. Sergiampietri, G. Signorelli, S. Suzuki, C. Topchyan, V. Tumakov, Y. Uchiyama, R. Valle, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Yu V. Yudin, D. Zanello

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

98 Citations (Scopus)

Abstract

A search for the decay μ⁺→e⁺γ, performed at PSI and based on data from the initial three months of operation of the MEG experiment, yields an upper limit on the branching ratio of BR(μ⁺→^e+γ)≤2.8×10^-11 (90% C.L.). This corresponds to the measurement of positrons and photons from ∼10¹⁴ stopped μ⁺-decays by means of a superconducting positron spectrometer and a 900 litre liquid xenon photon detector.

Original language	English
Pages (from-to)	1-12
Number of pages	12
Journal	Nuclear Physics B
Volume	834
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nuclphysb.2010.03.030
Publication status	Published - 2010 Jul
Externally published	Yes

Keywords

Lepton flavour violation
Muon decay

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.nuclphysb.2010.03.030

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Adam, J., Bai, X., Baldini, A., Baracchini, E., Barchiesi, A., Bemporad, C., Boca, G., Cattaneo, P. W., Cavoto, G., Cecchet, G., Cei, F., Cerri, C., De Bari, A., De Gerone, M., Doke, T., Dussoni, S., Egger, J., Galli, L., Gallucci, G., ... Zanello, D. (2010). A limit for the μ→eγ decay from the MEG experiment. Nuclear Physics B, 834(1-2), 1-12. https://doi.org/10.1016/j.nuclphysb.2010.03.030

Adam, J, Bai, X, Baldini, A, Baracchini, E, Barchiesi, A, Bemporad, C, Boca, G, Cattaneo, PW, Cavoto, G, Cecchet, G, Cei, F, Cerri, C, De Bari, A, De Gerone, M, Doke, T, Dussoni, S, Egger, J, Galli, L, Gallucci, G, Gatti, F, Golden, B, Grassi, M, Grigoriev, DN, Haruyama, T, Hildebrandt, M, Hisamatsu, Y, Ignatov, F, Iwamoto, T, Kaneko, D, Kettle, PR, Khazin, BI, Kiselev, O, Korenchenko, A, Kravchuk, N, Maki, A, Mihara, S, Molzon, W, Mori, T, Mzavia, D, Natori, H, Nardò, R, 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, Schneebeli, M, Sergiampietri, F, Signorelli, G, Suzuki, S, Topchyan, C, Tumakov, V, Uchiyama, Y, Valle, R, Voena, C, Xiao, F, Yamada, S, Yamamoto, A, Yamashita, S, Yudin, YV & Zanello, D 2010, 'A limit for the μ→eγ decay from the MEG experiment', Nuclear Physics B, vol. 834, no. 1-2, pp. 1-12. https://doi.org/10.1016/j.nuclphysb.2010.03.030

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title = "A limit for the μ→eγ decay from the MEG experiment",

abstract = "A search for the decay μ+→e+γ, performed at PSI and based on data from the initial three months of operation of the MEG experiment, yields an upper limit on the branching ratio of BR(μ+→e+γ)≤2.8×10-11 (90% C.L.). This corresponds to the measurement of positrons and photons from ∼1014 stopped μ+-decays by means of a superconducting positron spectrometer and a 900 litre liquid xenon photon detector.",

keywords = "Lepton flavour violation, Muon decay",

author = "J. Adam and X. Bai and A. Baldini and E. Baracchini and A. Barchiesi and C. Bemporad and G. Boca and Cattaneo, {P. W.} and G. Cavoto and G. Cecchet and F. Cei and C. Cerri and {De Bari}, A. and {De Gerone}, M. and T. Doke and S. Dussoni and J. Egger and L. Galli and G. Gallucci and F. Gatti and B. Golden and M. Grassi 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 O. Kiselev and A. Korenchenko and N. Kravchuk and A. Maki and S. Mihara and W. Molzon and T. Mori and D. Mzavia and H. Natori and R. Nard{\`o} and D. Nicol{\`o} and H. Nishiguchi and Y. Nishimura and W. Ootani and M. Panareo and A. Papa and R. Pazzi and G. Piredda and A. Popov and F. Renga and S. Ritt and M. Rossella and R. Sawada and M. Schneebeli and F. Sergiampietri and G. Signorelli and S. Suzuki and C. Topchyan and V. Tumakov and Y. Uchiyama and R. Valle and C. Voena and F. Xiao and S. Yamada and A. Yamamoto and S. Yamashita and Yudin, {Yu V.} and D. Zanello",

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AU - Adam, J.

AU - Bai, X.

AU - Baldini, A.

AU - Baracchini, E.

AU - Barchiesi, A.

AU - Bemporad, C.

AU - Boca, G.

AU - Cattaneo, P. W.

AU - Cavoto, G.

AU - Cecchet, 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 - 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 - Kaneko, D.

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 - Nardò, R.

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 - Schneebeli, M.

AU - Sergiampietri, F.

AU - Signorelli, G.

AU - Suzuki, S.

AU - Topchyan, C.

AU - Tumakov, V.

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 - 2010/7

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N2 - A search for the decay μ+→e+γ, performed at PSI and based on data from the initial three months of operation of the MEG experiment, yields an upper limit on the branching ratio of BR(μ+→e+γ)≤2.8×10-11 (90% C.L.). This corresponds to the measurement of positrons and photons from ∼1014 stopped μ+-decays by means of a superconducting positron spectrometer and a 900 litre liquid xenon photon detector.

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KW - Lepton flavour violation

KW - Muon decay

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SN - 0550-3213

VL - 834

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EP - 12

JO - Nuclear Physics B

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ER -

A limit for the μ→eγ decay from the MEG experiment

Abstract

Keywords

ASJC Scopus subject areas

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