$\nu$DFSZ: a technically natural non-supersymmetric model of neutrino masses, baryogenesis, the strong CP problem, and dark matter

TL;DR

The paper introduces the $ u$DFSZ model, a minimal, natural extension of the Standard Model that addresses neutrino masses, baryogenesis, the strong CP problem, and dark matter through high-scale physics.

Contribution

It presents a new, natural non-supersymmetric model that explains multiple phenomenological issues with a consistent high-scale framework.

Findings

Predicts a SM-like Higgs boson and TeV-scale scalar states.

Provides a mechanism for hierarchical leptogenesis at intermediate scales.

Suggests axionic dark matter as a viable candidate.

Abstract

We describe a minimal extension of the standard model by three right-handed neutrinos, a scalar doublet, and a scalar singlet (the "$\nu$DFSZ") which serves as an existence proof that weakly coupled high-scale physics can naturally explain phenomenological shortcomings of the SM. The $\nu$DFSZ can explain neutrino masses, baryogenesis, the strong CP problem, and dark matter, and remains calculably natural despite a hierarchy of scales up to $\sim 10^{11}$ GeV. It predicts a SM-like Higgs boson, (maximally) TeV-scale scalar states, intermediate-scale hierarchical leptogenesis ($10^5\text{ GeV}\lesssim M_{N}\lesssim 10^7\text{ GeV}$), and axionic dark matter.