Affleck-Dine baryogenesis in inflating curvaton scenario with O($10-10^2$TeV) mass moduli curvaton

TL;DR

This paper explores how the inflating curvaton scenario with a moduli field of 10-100 TeV mass can simultaneously account for baryogenesis, dark matter, and primordial curvature perturbations, avoiding previous isocurvature constraints.

Contribution

It demonstrates that replacing the oscillating curvaton with an inflating curvaton relaxes isocurvature constraints, enabling consistent baryogenesis and dark matter production in this mass range.

Findings

The scenario explains baryon asymmetry, dark matter, and curvature perturbations together.

It alleviates the observational constraints on baryon isocurvature perturbations.

The model is free from the Polonyi problem with the specified moduli mass.

Abstract

We study the Affleck-Dine (AD) baryogenesis in the inflating curvaton scenario, when the curvaton is a moduli field with O($10-10^2$TeV) mass. A moduli field with such mass is known to be free from the Polonyi problem, and furthermore its decay products can explain the present cold dark matter abundance. In our scenario, it further explains the primordial curvature perturbation and the present baryon density all together. The current observational bound on the baryon isocurvature perturbation, which severely constrains the AD baryogenesis with the original oscillating moduli curvaton scenario, is shown to put practically negligible constraint if we replace the oscillating curvaton with the inflating curvaton.