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

2024/10/17 by Knapen, Simon, Opferkuch, Toby, Redigolo, Diego +1 · 3 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2410.13941

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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• Refined Low-Energy Supernova Constraints on Lepton Flavor Violating Axions
• Expanding the Landscape of Exotic Muon Decays
• Small Progenitors, Large Couplings: Type Ic Supernova Constraints on Radiatively Decaying Particles

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