Asymmetric Dark Matter and CP Violating Scatterings in a UV Complete Model

TL;DR

This paper presents a new UV complete asymmetric dark matter model that uses CP violating scatterings to generate dark matter and matter-antimatter asymmetries, demonstrating its ability to match observed abundances.

Contribution

It introduces a novel UV complete model linking dark matter to the Standard Model via a neutrino portal with CP violating interactions.

Findings

Model successfully produces correct dark matter abundance.

Model accounts for observed matter-antimatter asymmetry.

Interactions with T^2 dependence are crucial for asymmetry generation.

Abstract

We explore possible asymmetric dark matter models using CP violating scatterings to generate an asymmetry. In particular, we introduce a new model, based on DM fields coupling to the SM Higgs and lepton doublets, a neutrino portal, and explore its UV completions. We study the CP violation and asymmetry formation of this model, to demonstrate that it is capable of producing the correct abundance of dark matter and the observed matter-antimatter asymmetry. Crucial to achieving this is the introduction of interactions which violate CP with a $T^{2}$ dependence.