Baryogenesis for WIMPs

TL;DR

This paper introduces a unified framework where baryon asymmetry and dark matter abundance both originate from WIMP physics, specifically through the decay of a meta-stable WIMP after freezeout, aligning with the WIMP miracle.

Contribution

It presents a novel mechanism linking WIMP decay to baryogenesis, embedding it in RPV SUSY, and discusses its phenomenological implications for collider and precision experiments.

Findings

The proposed mechanism successfully explains baryon asymmetry and dark matter abundance.

Embedding in RPV SUSY avoids washout of primordial baryon asymmetry.

Phenomenological predictions for LHC and precision tests are outlined.

Abstract

We propose a robust, unified framework, in which the similar baryon and dark matter cosmic abundances both arise from the physics of weakly interacting massive particles (WIMPs), with the rough quantitative success of the so-called "WIMP miracle". In particular the baryon asymmetry arises from the decay of a meta-stable WIMP after its thermal freezeout at or below the weak scale. A minimal model and its embedding in R-parity violating (RPV) SUSY are studied as examples. The new mechanism saves RPV SUSY from the potential crisis of washing out primordial baryon asymmetry. Phenomenological implications for the LHC and precision tests are discussed.