Preprint
Sep 2026
Probing $\nu$SMEFT at Belle II with displaced dilepton vertices
The existence of right-handed (RH) neutrinos is strongly motivated by the observation of small neutrino masses and as a means to shed light on the origin of parity violation in the Standard Model (SM). Experimental searches for the corresponding mass eigenstates, referred to as heavy neutral leptons (HNLs), have been c...
P. Bolton, Fabian Esser, Lukáš Gráf et al.
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