Baryogenesis Once More, Inside LHC

TL;DR

This paper explores the possibility of detecting the cosmic baryon asymmetry generation mechanism directly at the LHC through specific supersymmetric particle decays, linking cosmology and collider physics.

Contribution

It proposes a novel framework involving R-parity and CP violating squark decays for baryogenesis, connecting cosmological baryon asymmetry with collider signatures.

Findings

Identifies the single charged lepton plus multijet channel as key for detection.

Highlights the relation between baryon number generation and lepton charge asymmetry.

Suggests experimental strategies for LHC searches without missing energy.

Abstract

We investigate the feasibility of directly detecting a generation mechanism of the cosmic baryon asymmetry, by repeating the same particle physics process inside the LHC. We propose a framework with R-parity and CP violating squark decays responsible for baryogenesis, which can be embedded in supersymmetric models and is partly motivated by naturalness. We argue that the baryon number generation here is closely related to lepton charge asymmetry on the resonance. We emphasize the importance of the single charged lepton plus multijet channel in the absence of significant missing energy in search of such a scenario.