Higgs discovery: the beginning or the end of natural EWSB?

TL;DR

This paper evaluates whether recent Higgs data supports the Standard Model or favors natural extensions like composite Higgs models, analyzing their fit quality and implications for electroweak symmetry breaking.

Contribution

It provides a comprehensive analysis of how various composite Higgs models compare to the Standard Model in fitting recent experimental data.

Findings

Composite models can sometimes improve data fit over the SM.

Certain coupling structures in composite models align better with observations.

The analysis highlights conditions where composite models are favored or disfavored.

Abstract

We use global fits to analyze the most recent Higgs data from ATLAS, CMS and Tevatron and compare the Standard Model (SM) prediction with natural extensions of the SM. In particular we study wide classes of composite Higgs models based on different coset structures (leading at low energy to different Higgs sectors including extra singlets and Higgs doublets) and different coupling structures of the elementary fermions to the strong sector. We point out in what situations the composite models could improve (or worsen) the fit to the data and compare with similar trends in the MSSM.