A Model of Neutrino Mass, Baryon Asymmetry, and Asymmetric Dark Matter with $SU(2)_D\otimes U(1)_{D'}$ Dark Sector

TL;DR

This paper proposes a comprehensive particle physics model extending the Standard Model with a dark sector that unifies neutrino mass, baryon asymmetry, and asymmetric dark matter, linking them to inflation and testable in future experiments.

Contribution

It introduces a new dark sector with $SU(2)_D \otimes U(1)_{D'}$ symmetry that unifies key cosmological phenomena and provides testable predictions.

Findings

Neutrino masses generated via Dirac-type seesaw

Baryon asymmetry and dark matter originate from inflaton decay

Model predictions can be tested in near-future experiments

Abstract

I suggest a new extension of the standard model of particle physics, which introduces a dark sector with the $SU(2)_{D}\otimes U(1)_{D'}$ symmetry besides the SM sector. The new particles of the model all inhabit in the dark sector. The dark gauge symmetry breaking will bring about fruitful physics beyond the SM. The tiny neutrino mass is generated through the Dirac-type seesaw mechanism. The inflaton decay can not only provide the universe inflation and reheating, but also lead to the baryon asymmetry and the asymmetric cold dark matter. In short, the model provides an unification of the neutrino mass, the baryon asymmetry, the asymmetric CDM and the inflation, and it can account for their common origin. Finally, it is very possible to test the model predictions and probe the dark sector physics in near future experiments.