Muon-Decay Parameters from COHERENT
Abstract
We demonstrate that measurements of Coherent Elastic Neutrino-Nucleus Scattering (CE) 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 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.
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