On the impact of the LHC Run2 data on general Composite Higgs scenarios

TL;DR

This paper evaluates how recent LHC Run2 data constrains general Composite Higgs models, focusing on effects like non-linearities, scalar mixing, and fermionic partners, providing new experimental limits and insights into model parameters.

Contribution

It offers the first comprehensive analysis of LHC Run2 data impact on general Composite Higgs scenarios, including new limits on compositeness scale, scalar mixing, and top-partner properties.

Findings

New limits on the compositeness scale from LHC data

Constraints on scalar mixing angles with the Higgs

Insights into top-partner masses and mixings

Abstract

We study the the impact of Run2 LHC data on general Composite Higgs scenarios, where non-linear effects, mixing with additional scalars and new fermionic degrees of freedom could simultaneously contribute to the modification of Higgs properties. We obtain new experimental limits on the scale of compositeness, the mixing with singlets and doublets with the Higgs, and the mass and mixing angle of top-partners. We also show that for scenarios where new fermionic degrees of freedom are involved in electroweak symmetry breaking, there is an interesting interplay among Higgs coupling measurements, boosted Higgs properties, SMEFT global analyses, and direct searches for single- and double-production of vector-like quarks.