$μ^- \to e^-γ$ in a muonic atom as a probe for effective lepton flavor violating operators involving photon fields

Fuente: arXiv
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Main Authors: Uesaka, Yuichi, Yamanaka, Masato, Kuno, Yoshitaka
Format: Preprint
Published: 2024
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author Uesaka, Yuichi
Yamanaka, Masato
Kuno, Yoshitaka
author_facet Uesaka, Yuichi
Yamanaka, Masato
Kuno, Yoshitaka
contents We propose the $μ^-\to e^-γ$ process in a muonic atom as a novel means to investigate charged lepton flavor violation (CLFV). We demonstrate its sensitivity in probing effective CLFV operators associated with both single and double photon fields. In comparison to $μ^+\to e^+γ$ using free positive muon decays at rest, the emitted electron and photon in $μ^-\to e^-γ$ exhibit non-monochromatic spectra, presenting non-trivial case. We derive the decay rate formula and demonstrate that the potential rate of the process is significant enough to motivate exploration in future muon CLFV experiments.
format Preprint
id arxiv_https___arxiv_org_abs_2411_10304
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle $μ^- \to e^-γ$ in a muonic atom as a probe for effective lepton flavor violating operators involving photon fields
Uesaka, Yuichi
Yamanaka, Masato
Kuno, Yoshitaka
High Energy Physics - Phenomenology
We propose the $μ^-\to e^-γ$ process in a muonic atom as a novel means to investigate charged lepton flavor violation (CLFV). We demonstrate its sensitivity in probing effective CLFV operators associated with both single and double photon fields. In comparison to $μ^+\to e^+γ$ using free positive muon decays at rest, the emitted electron and photon in $μ^-\to e^-γ$ exhibit non-monochromatic spectra, presenting non-trivial case. We derive the decay rate formula and demonstrate that the potential rate of the process is significant enough to motivate exploration in future muon CLFV experiments.
title $μ^- \to e^-γ$ in a muonic atom as a probe for effective lepton flavor violating operators involving photon fields
topic High Energy Physics - Phenomenology
url https://arxiv.org/abs/2411.10304