Probing Unified Origin of Dark Matter and Baryon Asymmetry at PAMELA/Fermi

TL;DR

This paper introduces a unified model linking dark matter and baryon asymmetry, explaining cosmic ray anomalies through inflaton decay processes that generate both lepton asymmetry and dark matter.

Contribution

It presents a novel unified framework connecting dark matter and baryon asymmetry with a specific decay mechanism explaining cosmic ray observations.

Findings

Inflaton decay produces lepton asymmetry and dark matter.

Dark matter decay accounts for PAMELA/Fermi cosmic ray anomalies.

The model links early universe processes to current cosmic ray data.

Abstract

We propose an unified model of dark matter and baryon asymmetry in a lepto-philic world above the electroweak scale. We provide an example where the inflaton decay products subsequently generate a lepton asymmetry and a dark matter abundance with an unique coupling in the early universe, while the present day decay of the dark matter through the same coupling gives rise the observed cosmic ray anomalies at PAMELA and Fermi Large Area Telescope.