Parity: from strong CP problem to dark matter, neutrino masses and baryon asymmetry

TL;DR

This paper proposes a unified particle physics framework that addresses the strong CP problem, predicts a dark matter particle around 302 GeV detectable via kinetic mixing, and explains neutrino masses and baryon asymmetry.

Contribution

It introduces a parity-based model linking the strong CP problem to dark matter, neutrino masses, and baryon asymmetry, without using axions.

Findings

Predicts a 302 GeV dark matter particle detectable through kinetic mixing.

Provides a natural mechanism for inverse-linear seesaw neutrino masses.

Explains baryon asymmetry via resonant leptogenesis.

Abstract

We show that in an SU(3)_c\times [SU(2)_L\times U(1)_Y]\times [SU(2)'_R\times U(1)'_Y] framework, the parity symmetry motivated by solving the strong CP problem without resorting to an axion can predict a dark matter particle with a mass around 302 GeV. This dark matter candidate can be directly detected in the presence of a U(1)_Y\times U(1)'_Y kinetic mixing. Furthermore, our model can accommodate a natural way to simultaneously realize an inverse-linear seesaw for neutrino masses and a resonant leptogenesis for baryon asymmetry.