Constraints on New Physics from Baryogenesis and Large Hadron Collider Data

TL;DR

The power of constraining theories of new physics is demonstrated by insisting that they lead to electroweak baryogenesis, while agreeing with current data from the Large Hadron Collider.

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.

Figures (2)

• Figure 1: A scan of parameter space leading to strong enough first order (red bullets) and too weak or second-order phase transitions (blue crosses).
• Figure 2: Experimental bounds from current data of the latest LHC runs, and the exclusion region inferred from Fig. \ref{['fig:scatter']}.