Constraints on New Physics from Baryogenesis and Large Hadron Collider Data

TL;DR

This paper explores how current Large Hadron Collider data constrains new physics theories that could explain the matter-antimatter asymmetry through electroweak baryogenesis, focusing on a singlet scalar extension of the Standard Model.

Contribution

It introduces a method to constrain new physics models based on their compatibility with electroweak baryogenesis and LHC data, narrowing down viable parameter space.

Findings

Significant bounds on singlet scalar models from LHC data

Reduced parameter space for electroweak baryogenesis scenarios

Demonstrated the effectiveness of collider constraints on new physics theories

Abstract

We demonstrate the power of constraining theories of new physics by insisting that they lead to electroweak baryogenesis, while agreeing with current data from the Large Hadron Collider. The general approach is illustrated with a singlet scalar extension of the Standard Model. Stringent bounds can already be obtained, which reduce the viable parameter space to a small island.