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Lepton-flavor violating axions at MEG II

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arxiv 2203.11222 v1 pith:XMJHOHN3 submitted 2022-03-21 hep-ph

classification hep-ph
keywords channeldataviolatingaxion-likeaxionsbeamdedicateddiscovery
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We study the sensitivity of the existing MEG data to lepton flavor violating axion-like particles produced through $\mu^+ \to e^+ a \gamma$ and estimate the discovery potential for the upcoming MEG II experiment in this channel. The MEG II signal efficiency can be improved significantly if a new trigger can be implemented in a dedicated run with a reduced beam intensity. This search would establish the world leading measurement in this channel with only 1 month of data taking.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Flavor-violating dark matter at MEG-II and Mu3e

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Rare muon decays into a positron and two dark matter particles could let MEG-II and Mu3e probe lepton-flavor-violating dark matter interactions at TeV scales, with a radiative decay extending the reach to sub-MeV dark matter.

  2. ALP production in Lepton Flavour Violating meson, tau and gauge boson decays

    hep-ph 2026-04 unverdicted novelty 6.0 of 10

    ALPs with LFV couplings above the muon mass threshold can be produced in LFV meson, tau, and gauge boson decays, yielding clean eμ signatures that enable new searches at future experiments.

  3. Loop-Level Lepton Flavor Violation and Diphoton Signals in the Minimal Left-Right Symmetric Model

    hep-ph 2025-12 conditional novelty 6.0 of 10

    Recasting axion limits onto the one-loop H3 couplings of the minimal left-right symmetric model excludes the right-handed scale up to 2×10^9 GeV and could eventually probe 6×10^11 GeV.

  4. CPon Dark Matter

    hep-ph 2024-11 conditional novelty 6.0 of 10

    A light scalar from spontaneous CP violation, the CPon, can be a viable dark matter candidate with a mass between about 10 meV and 1 MeV and a suppression scale above 10^12 GeV.

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