A bstract The existence of right-handed neutrinos, or heavy neutral leptons (HNLs), is
strongly motivated by the observation of neutrino masses and mixing. The mass of these …

We consider the dipole portal to sterile neutrinos, also called heavy neutral leptons (HNLs).
The dipole interaction with the photon leads to HNL production in meson decays as well as …

A bstract We compute the one-loop running of the dimension-six CP-even Higgs operators
in the Standard Model effective field theory involving the right-handed component of the …

A bstract The Dimension-5 Seesaw Portal is a Type-I Seesaw model extended by d= 5
operators involving the sterile neutrino states, leading to new interactions between all …

A bstract In this work we consider the Standard Model Effective Field Theory extended with
right-handed neutrinos, the νSMEFT, and calculate the full set of one-loop anomalous …

A bstract We write down a geometric realization of the Standard Model Effective Field Theory
(SMEFT) extended by nf flavours of light sterile neutrinos, a so-called geoνSMEFT. As with …

A bstract The addition of d= 5 operators to the Seesaw model leads to the Dimension-5
Seesaw Portal. Here, two new operators provide interactions for the heavy sterile neutrinos …

The extension of the standard model with new high-scale weakly coupled physics involving
right-handed neutrinos in an effective field theory framework (SMNEFT) allows for a …

A bstract We assess the ability of the Belle II experiment to probe the Dirac or Majorana
nature of a massive right-handed neutrino (RHN) N in the MeV to GeV mass range. We …

The observation of neutrino oscillations and masses motivates the extension of the standard
model with right-handed neutrinos, leading to heavy neutrino states possibly in the …