TL;DR
This paper updates constraints on the Higgs boson's properties using recent LHC data and electroweak measurements, confirming consistency with the Standard Model predictions for a 126 GeV Higgs.
Contribution
It provides the most recent combined analysis of Higgs coupling measurements and electroweak data, refining the bounds on Higgs interactions beyond previous studies.
Findings
Higgs coupling to W and Z bosons is within [0.98, 1.09] of the Standard Model at 95% CL.
Higher-order Higgs couplings to electroweak gauge bosons are tightly constrained.
Data are consistent with the Higgs being the Standard Model Higgs boson.
Abstract
We update the experimental constraints on the parameters of the Higgs effective Lagrangian. We combine the most recent LHC Higgs data in all available search channels with electroweak precision observables from SLC, LEP-1, LEP-2, and the Tevatron. Overall, the data are perfectly consistent with the 126 GeV particle being the Standard Model Higgs boson. The Higgs coupling to W and Z bosons relative to the Standard Model one is constrained in the range [0.98,1.09] at 95% confidence level, independently of the values of other Higgs couplings. Higher-order Higgs couplings to electroweak gauge bosons are also well constrained by a combination of LHC Higgs data and electroweak precision tests.
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