Experimental Searches for Muon to Electron Conversion in Nuclei
Abstract
Charged lepton flavor violation (CLFV) provides a highly sensitive probe of physics beyond the Standard Model. This experimental review discusses μ− → e− conversion in nuclei, which is a muon CLFV process characterized by a clean monoenergetic-electron signature and the ability to exploit large samples of stopped muons. It describes the physics motivation, basic experimental principles, key background sources, and search strategies, as well as the status and prospects of past and next-generation experiments such as COMET and Mu2e. Future experimental concepts may extend the sensitivity even further. If a signal is observed, comparisons among results obtained with different target nuclei and with those from complementary searches for other muon CLFV decay modes will be essential for identifying the underlying interaction.
Related
- Theoretical--operational modelling of complex experiments: parameter robustness and degeneracy in muon--electron conversion
- First measurement of the low-momentum negative-muon beam for the muon-to-electron conversion experiment at J-PARC
- Hyperfine-driven polarization effects in elastic muon scattering by atomic nuclei
- Axion-Like Particle Searches at Muon Colliders: Photon-Neutrino Signatures and Heavy-Neutral-Lepton Feasibility
- Muon-to-positron conversion from light Majorana neutrino exchange: nuclear responses and pion-pole-improved multipoles
BibTeX
@misc{kuno2026experimental,
title = {{Experimental Searches for Muon to Electron Conversion in Nuclei}},
author = {Yoshitaka Kuno},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.02579},
eprint = {2611.02579},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.02579},
}
RIS
TY - UNPB
TI - Experimental Searches for Muon to Electron Conversion in Nuclei
AU - Yoshitaka Kuno
PY - 2026
DA - 2026/11/02
PB - arXiv
DO - 10.48550/arxiv.2611.02579
UR - https://arxiv.org/abs/2611.02579
AB - Charged lepton flavor violation (CLFV) provides a highly sensitive probe of physics beyond the Standard Model. This experimental review discusses μ^− → e^− conversion in nuclei, which is a muon CLFV process characterized by a clean monoenergetic-electron signature and the ability to exploit large samples of stopped muons. It describes the physics motivation, basic experimental principles, key background sources, and search strategies, as well as the status and prospects of past and next-generation experiments such as COMET and Mu2e. Future experimental concepts may extend the sensitivity even further. If a signal is observed, comparisons among results obtained with different target nuclei and with those from complementary searches for other muon CLFV decay modes will be essential for identifying the underlying interaction.
ER -