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arXiv · 2410.13941

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

Simon Knapen·Toby Opferkuch·Diego Redigolo·Michele Tammaro
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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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Simon Knapen, Toby Opferkuch, Diego Redigolo, Michele Tammaro. 2024-10-17. Displaced Searches for Axion-Like Particles and Heavy Neutral Leptons at Mu3e. https://arxiv.org/abs/2410.13941

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