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Displaced Searches for Axion-Like Particles and Heavy Neutral Leptons at Mu3e

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arxiv 2410.13941 v1 pith:AV2MM34H submitted 2024-10-17 hep-ph

Simon Knapen , Toby Opferkuch , Diego Redigolo , Michele Tammaro This is my paper · ORCID
classification hep-ph
keywords mu3edisplaceddecaysparticlessearchesaxion-likebackgroundsconstraints
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present strategies for the Mu3e experiment to search for light, weakly coupled particles produced in rare muon decays, focusing on displaced $e^+e^-$ decays within the hollow target. In most scenarios the backgrounds can be fully suppressed with a suitable set of cuts. We furthermore quantify the interplay between displaced and prompt searches at Mu3e and existing constraints, showing how Mu3e has a unique opportunity to probe unexplored parameter space.

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Cited by 3 Pith papers

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

  1. 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.

  2. 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.

  3. Searching for long-lived particles from stopped pions and muons at the CiADS-BDE

    hep-ph 2025-01 conditional novelty 4.0 of 10

    Projected 5-year sensitivity of the proposed CiADS-BDE shows reach beyond current bounds for HNLs, electrophilic and LFV ALPs, and RPV light binos.

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