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MEG final results and progress towards MEG II

by Toshiyuki Iwamoto on behalf of the MEG II collaboration

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Submission summary

Authors (as registered SciPost users): Toshiyuki Iwamoto
Submission information
Preprint Link: scipost_201811_00039v2  (pdf)
Date accepted: 2019-01-17
Date submitted: 2018-12-10 01:00
Submitted by: Iwamoto, Toshiyuki
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 15th International Workshop on Tau Lepton Physics (TAU2018)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Experiment
Approach: Experimental


The MEG experiment, which is to search for lepton flavor violating muon decay, had been successfully finished in 2013. The final sensitivity of the experiment was 5.3 × 10−13, and since the experiment did not find any signal, the upper limit of the branching ratio of the μ+ → e+γ was set to be 4.2 × 10−13 at 90% CL. The MEG II experiment will improve the sensitivity by an order of magnitude with three years data taking, and the target sensitivity is 6×10−14. In 2018 after the detector integration, the muon beam data taking will be planned with limited number of readout channels. In 2019, the engineering run and the physics run will be started.

Published as SciPost Phys. Proc. 1, 040 (2019)

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