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Minimal Seesaw Model with a Discrete Heavy-Neutrino Exchange Symmetry
Thomas Rink, Kai Schmitz, Tsutomu T. Yanagida
We present a Froggatt-Nielsen flavor model that yields a minimal realization of the type-I seesaw mechanism. This seesaw model is minimal for three reasons: (i) It features only tw…
Perturbed Yukawa Textures in the Minimal Seesaw Model
Thomas Rink, Kai Schmitz
\noindent We revisit the \textit{minimal seesaw model}, i.e., the type-I seesaw mechanism involving only two right-handed neutrinos. % This model represents an important minimal be…
Leptogenesis after Chaotic Sneutrino Inflation and the Supersymmetry Breaking Scale
Fredrik Björkeroth, Stephen F. King, Kai Schmitz +1
We discuss resonant leptogenesis arising from the decays of two nearly-degenerate right-handed neutrinos, identified as the inflaton and stabiliser superfields in a model of chaoti…
Polonyi Inflation
Kai Schmitz, Tsutomu T. Yanagida
Spontaneously broken supersymmetry (SUSY) and a vanishingly small cosmological constant imply that R symmetry must be spontaneously broken at low energies. Based on this observatio…