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

研究成果: Article査読

465 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号201801
ジャーナルPhysical review letters
110
20
DOI
出版ステータスPublished - 2013 5月 13
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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