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

研究成果: Article査読

227 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号171801
ジャーナルPhysical review letters
107
17
DOI
出版ステータスPublished - 2011 10 17
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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