Muon-Decay Parameters from COHERENT
We demonstrate that measurements of coherent elastic neutrino-nucleus scattering at spallation sources are valuable probes of muon-decay physics. Using COHERENT data we derive the first direct constraint on the Michel parameters governing the ν[over ¯]_{μ} energy distribution. We also discuss future sensitivities, the implications for the Lorentz structure of the interactions mediating muon decay, and the application to other neutrino-production mechanisms like pion decay.
Authors
- Víctor Bresó-Pla (ORCID: https://orcid.org/0000-0002-0240-2738)
- Martín González‐Alonso (ORCID: https://orcid.org/0000-0003-0319-8828)
- Suraj Prakash (ORCID: https://orcid.org/0000-0002-0917-3835)
- Sergio Cruz-Alzaga (ORCID: https://orcid.org/0009-0007-1212-0455)
Institutions
- Universitat de València (ES)
- Heidelberg University (DE)
- Instituto de Física Corpuscular (ES)
- Instituto de Física Teórica (ES)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-09-22
- DOI
- https://doi.org/10.1103/mlhl-v822
- Citations
- 1
- Primary Topic
- Particle physics theoretical and experimental studies
- Type
- article
- Field-Weighted Citation Impact
- 1.87