Affleck-Dine baryogenesis in the SUSY Dine-Fischler-Srednicki-Zhitnitsky axion model without R-parity

TL;DR

This paper explores how the Affleck-Dine mechanism within a SUSY axion model without R-parity can simultaneously explain baryon asymmetry, neutrino masses, and dark matter, with testable proton decay predictions.

Contribution

It demonstrates that R-parity violating terms can account for neutrino mass differences and baryon asymmetry, linking axion dark matter with baryogenesis in a unified SUSY framework.

Findings

R-parity violation explains neutrino mass differences.

The model produces the correct baryon asymmetry.

Proton decay may be observable in future experiments.

Abstract

We investigate the baryon asymmetry in the supersymmetry Dine-Fischler-Srednicki-Zhitnitsky axion model without R-parity. It turns out that the R-parity violating terms economically explain the atmospheric mass-squared difference of neutrinos and the appropriate amount of baryon asymmetry through the Affleck-Dine mechanism. In this model, the axion is a promising candidate for the dark matter and the axion isocurvature perturbation is suppressed due to the large field values of Peccei-Quinn fields. Remarkably, in some parameter regions explaining the baryon asymmetry and the axion dark matter abundance, the proton decay will be explored in future experiments.