Displaced searches for Axion-Like Particles and Heavy Neutral Leptons at Mu3e
A bstract 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.
Authors
- Toby Opferkuch (ORCID: https://orcid.org/0000-0002-7388-7453)
- Diego Redigolo (ORCID: https://orcid.org/0000-0002-7958-5392)
- Michele Tammaro (ORCID: https://orcid.org/0000-0002-0330-411X)
- Simon Knapen (ORCID: https://orcid.org/0000-0002-6733-9231)
Institutions
- Scuola Internazionale Superiore di Studi Avanzati (IT)
- Lawrence Berkeley National Laboratory (US)
- University of California System (US)
- Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT)
Publication Details
- Journal
- Journal of High Energy Physics
- Published
- 2025-06-19
- DOI
- https://doi.org/10.1007/jhep06(2025)189
- Citations
- 7
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 13.09
Funders
- National Science Foundation
- U.S. Department of Energy
- Aspen Center for Physics
- European Commission
- High Energy Physics