A model of neutrino mass, baryon asymmetry, and asymmetric dark matter with [formula omitted] dark sector

Wei-Min Yang

doi:10.1016/j.nuclphysb.2019.114643

Abstract

I suggest a new extension of the standard model of particle physics, which introduces a dark sector with the SU(2)D⊗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.

Highlights

The standard model (SM) of the fundamental particles has successfully accounted for all kinds of the particle phenomena at or below the electroweak scale, refer to the relevant reviews in Particle Data Group [1], but it can not address the three important issues: the tiny neutrino mass [2], the matter-antimatter asymmetry [3], and the cold dark matter (CDM) [4]
Some inspiring ideas attempt to find some connections among the neutrino mass, the baryon asymmetry and the CDM, for instance, the neutrino mass and the leptogenesis can be together implemented by the super-heavy Majorana fermion [13] or the scalar triplet [14], the asymmetric CDM can be related to the baryon asymmetry [15], and some sophisticated models can unify them into a framework [16], and the author’s recent works on this field [17]
All kinds of the parameters of the SM have essentially been fixed by the current experimental data [1], while several key parameters in the dark sector can be determined very well by the current data of the tiny neutrino mass, the baryon asymmetry, and the CDM abundance

Summary

Introduction

At first Φ at the GUT scale breaks the dark gauge symmetry, and yields the superheavy Dirac mass MN through the combination of NL0 and NR0 , the doublet couplings related to lLD and lRD are decomposed into their component couplings. Both the B − L − LD number and the QD charge are conversed, N acts as a mediator between the dark sector and the νSM one. The mass relations of Eq (10) will lead to successful explanations for the matter-antimatter asymmetry and the CDM

Baryon Asymmetry and Asymmetric CDM from Inflaton Decay

Dark Sector Physics

Numerical Results and Model Test

Conclusions