What type of study is this?

This is a Quantitative Study study.

September 22, 2025

Muon-Decay Parameters from COHERENT

Key Points

Findings reveal the first direct constraints on the Michel parameters from COHERENT data, enhancing understanding of muon decay.
COHERENT analysis highlights the implications for the Lorentz structure of interactions involved in muon decay, affecting theoretical models.
Future sensitivities are discussed, pointing to potential advancements in neutrino physics and related decay mechanisms.
This research supports the relevance of coherent elastic neutrino-nucleus scattering as a method to explore fundamental particle interactions.

Abstract

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¯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.

Muon-Decay Parameters from COHERENT

Key Points

Abstract

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