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Searching for muon to electron conversion: The Mu2e experiment at Fermilab

by Richard Bonventre

Submission summary

As Contributors: Richard Bonventre
Preprint link: scipost_201811_00006v2
Date accepted: 2019-01-15
Date submitted: 2018-11-28
Submitted by: Bonventre, Richard
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 15th International Workshop on Tau Lepton Physics (Amsterdam, 2018-09)
Domain(s): Experimental
Subject area: High-Energy Physics - Experiment


The Mu2e experiment will measure the charged-lepton flavor violating (CLFV) neutrino-less conversion of a negative muon into an electron in the field of a nucleus. Mu2e will improve the previous measurement by four orders of magnitude, reaching a 90% C.L. limit of $8\times10^{-17}$ on the conversion rate. The experiment will reach mass scales of nearly $10^4$ TeV, far beyond the direct reach of colliders. The experiment is sensitive to a wide range of new physics, complementing and extending other CLFV searches. Mu2e is under design and construction at the Muon Campus of Fermilab; we expect to start taking physics data in 2022 with 3 years of running to achieve our target sensitivity.

Current status:

Submission & Refereeing History

Resubmission scipost_201811_00006v2 on 28 November 2018
Submission scipost_201811_00006v1 on 6 November 2018

Reports on this Submission

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Anonymous Report 1 on 2018-12-4 Invited Report


These proceedings present the state of preparations for the Mu2e experiment which is expected to be a significant activity at Fermilab in the next decade and will have better sensitivity than existing results by orders of magnitude. The document is clear and well written and provides a useful update for the community.

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