The final results of the search for the lepton flavour violating decay μ+â e+γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009â2013 and totalling 7.5 à 1014stopped muons on target are presented. No significant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ+â e+γ) < 4.2 à 10- 13(90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date.
Search for the lepton flavour violating decay μ+â e+γ with the full dataset of the MEG experiment: MEG Collaboration
Biasotti, M.;De Gerone, M.;Dussoni, S.;Gatti, F.;Pizzigoni, G.;
2016-01-01
Abstract
The final results of the search for the lepton flavour violating decay μ+â e+γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009â2013 and totalling 7.5 à 1014stopped muons on target are presented. No significant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ+â e+γ) < 4.2 à 10- 13(90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date.
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Descrizione: Baldini, A.M., Bao, Y., Baracchini, E. et al. Eur. Phys. J. C (2016) 76: 434. https://doi.org/10.1140/epjc/s10052-016-4271-x This is an open access article distributed under the terms of the Creative Commons CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. You are not required to obtain permission to reuse this article. To request permission for a type of use not listed, please contact Springer Nature
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