Speaker
Sergio de la Cruz Alzaga
(IFIC (CSIC-Universidad de Valencia))
Description
We study the most general Lagrangian for muon decay at low energies, including light Dirac right-handed neutrinos ($\nu$WEFT), in the COHERENT experiment at the Spallation Neutron Source at Oak Ridge National Laboratory. Using the COHERENT data, we derive the first direct constraint on the Michel parameters governing the $\bar\nu_\mu$ energy distribution. We also discuss future sensitivities and assess the implications for the Lorentz structure of the interactions mediating muon decay.
We thus demonstrate that Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) measurements at spallation sources are valuable probes of muon decay physics.
Author
Sergio de la Cruz Alzaga
(IFIC (CSIC-Universidad de Valencia))
Co-authors
Víctor Bresó Pla
(University of Heidelberg)
Dr
Suraj Prakash
(IFIC (CSIC-Universidad de Valencia))
Martin Gonzalez-Alonso
(IFIC (UV & CSIC))
