Global Analysis of the Higgs Candidate with Mass ~ 125 GeV

TL;DR

This paper examines the properties of the 125 GeV Higgs candidate, confirming its couplings align with the Standard Model and constraining alternative models using combined collider data.

Contribution

It provides a comprehensive analysis of Higgs couplings, showing consistency with the Standard Model and limiting the viability of certain composite Higgs models.

Findings

Higgs couplings are compatible with Standard Model predictions.

Data disfavors several composite Higgs models.

Higgs couplings scale linearly with particle masses within 20% uncertainty.

Abstract

We analyze the properties of the Higgs candidate with mass ~ 125 GeV discovered by the CMS and ATLAS Collaborations, constraining the possible deviations of its couplings from those of a Standard Model Higgs boson. The CMS, ATLAS and Tevatron data are compatible with Standard Model couplings to massive gauge bosons and fermions, and disfavour several types of composite Higgs models unless their couplings resemble those in the Standard Model. We show that the couplings of the Higgs candidate are consistent with a linear dependence on particle masses, scaled by the electroweak scale ~ 246 GeV, the power law and the mass scale both having uncertainties ~ 20%.