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

2024/11/15 by Yuichi Uesaka, Uesaka, Yuichi, Masato Yamanaka +3
Physics and Astronomy · Medicine · #Particle physics theoretical and experimental studies #Medical Imaging Techniques and Applications #Radiation Therapy and Dosimetry

paper · pdf · doi:10.48550/arxiv.2411.10304

Abstract

We propose the μ^-→ 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⁺→ e⁺γ using free positive muon decays at rest, the emitted electron and photon in μ^-→ 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.

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