The paper derives a range of sterile neutrino masses and transition magnetic moments that would reproduce the LORRI cosmic optical background excess, but the excess is only a 1.5-sigma signal.
Clockwork Neutrinogenesis: Baryogenesis from theory space
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abstract
We propose a minimal clockwork model to illustrate the possibility of baryogenesis via leptogenesis in a theory space setting. The standard lepton sector is augmented with three copies of a clockwork lattice made of SM neutral fermions. The two boundaries of these one-dimensional lattices are endowed with couplings to the SM leptons and three dark sector fermions, respectively. Small neutrino masses and a resonance enhanced Dirac leptogenesis are naturally obtained for anarchic textures of the Yukawa matrices, with $\sim \mathcal{O}(1)$ elements, provided the heavy clockwork fermions have masses $\gtrsim \mathcal{O}(10 \, \mbox{TeV})$
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Bounds on decaying sterile neutrinos via magnetic dipole moment from COB intensity
The paper derives a range of sterile neutrino masses and transition magnetic moments that would reproduce the LORRI cosmic optical background excess, but the excess is only a 1.5-sigma signal.