Speaker
Rebeca Beltrán
(IFIC - University of Valencia and CSIC (Spain))
Description
In this talk, we discuss tree-level UV completions for dimension 6 and 7 operators in the Standard Model Effective Field Theory extended with right-handed neutrinos ($N_R$SMEFT). We reveal that every model generating lepton number violating (LNV) operators with right-handed neutrinos also leads to the formation of active neutrino masses. This intrinsic connection between LNV processes and the existence of Majorana masses for SM neutrinos allows us to derive constraints on dimension 7 operators from the observed neutrino masses. Importantly, we demonstrate that these operators may not always be suppressed, suggesting their potential observability in future experiments.
Primary author
Rebeca Beltrán
(IFIC - University of Valencia and CSIC (Spain))
