Muon-Decay Parameters from COHERENT

2025/02/25 by Bresó-Pla, Víctor, Cruz-Alzaga, Sergio, González-Alonso, Martín +1 · 2 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2502.18175

Abstract

We demonstrate that measurements of Coherent Elastic Neutrino-Nucleus Scattering (CEνNS) 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_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.

Cited by

• Searches for heavy neutral lepton decays at spallation neutron sources
• Coherent Elastic Neutrino-Nucleus Scattering at the Japan Proton Accelerator Research Complex

Related

• Muon Oscillations
• Coherent elastic neutrino-nucleus scattering: Terrestrial and astrophysical applications
• Coherent elastic neutrino-nucleus scattering as a precision test for the Standard Model and beyond: the COHERENT proposal case
• On coherent neutrino and antineutrino scattering off nuclei
• Observation of Coherent Elastic Neutrino-Nucleus Scattering by COHERENT