9–11 Jun 2025
Centro Brasileiro de Pesquisas Físicas
America/Sao_Paulo timezone

Muon-decay parameters from CEvNS measurements at Spallation Sources

10 Jun 2025, 10:06
18m
Auditório Ministro João Alberto Lins de Barros (Centro Brasileiro de Pesquisas Físicas)

Auditório Ministro João Alberto Lins de Barros

Centro Brasileiro de Pesquisas Físicas

Rua Dr. Xavier Sigaud 150 Urca, Rio de Janeiro, RJ Brazil

Speaker

Martin Gonzalez-Alonso (CERN)

Description

We demonstrate that CEνNS measurements at spallation sources are valuable probes of muon-decay physics. Using COHERENT data we derive the first 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. Talk based on 2502.18175 and ongoing work.

Author

Presentation materials