A Model of Asymmetric Hadronic Dark Matter and Leptogenesis

TL;DR

This paper proposes a new model for asymmetric hadronic dark matter originating from QCD phase transition, predicting specific properties and an upper mass limit, which can be tested experimentally.

Contribution

It introduces a novel hadronic dark matter model linked to leptogenesis with specific mass predictions and decoupling behavior.

Findings

ADM decouples at about 130 MeV

Mass upper limit of ADM is 1207 GeV

Model is testable in future experiments

Abstract

The paper suggests a model to account for the common origins of the asymmetric dark matter (ADM) and matter-antimatter asymmetry. The ADM nature is a stable hadronic particle consisting of a heavy color scalar and a light $u$ quark, which is formed after the QCD phase transition. At the early stage the ADM are in thermal equilibrium through collisions with the nucleons, moreover, they can emit the $\gamma$ photons with $0.32$ MeV energy. However they are decoupling and become the dark matter at the temperature about $130$ MeV. The mass upper limit of the ADM is predicted as $M_{D}<1207$ GeV. It is feasible and promising to test the model in future experiments.