The Majorana nature of neutrinos is strongly motivated from the theoretical and
phenomenological point of view. A plethora of neutrino mass models, known collectively as …

We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting
views and insights from all disciplines involved—cosmology, astrophysics, nuclear, and …

We investigate the possibilities of probing the electroweak scale seesaw scenarios such as
type-I, type-II, and type-III seesaw at e-γ and γ γ colliders. For the case of type-I seesaw, the …

The focus of this paper lies on the possible experimental tests of leptogenesis scenarios. We
consider both leptogenesis generated from oscillations, as well as leptogenesis from out-of …

A bstract The extension of the Standard Model with two gauge-singlet Majorana fermions
can simultaneously explain two beyond-the-Standard-model phenomena: neutrino masses …

A bstract Heavy neutrinos with masses below the electroweak scale can simultaneously
generate the light neutrino masses via the seesaw mechanism and the baryon asymmetry of …

A bstract An observation of any lepton number violating process will undoubtedly point
towards the existence of new physics and indirectly to the clear Majorana nature of the …

The phenomenon of neutrino flavor oscillations motivates searches for sterile neutrinos in a
broad range of masses and mixing-parameter values. A sterile neutrino N that mixes …

In this work, we study the lepton number violating W boson and top quark decays via
intermediate on-shell Majorana neutrinos N j into three charged leptons and a light neutrino …

A gauged U (1) extension of the Standard Model (SM) is a simple and anomaly-free
framework where three generations of Majorana type right-handed neutrinos (RHNs) are …