Determination of Higgs-boson couplings (SFitter)

TL;DR

This paper discusses how the SFitter framework can be used to measure Higgs boson couplings at the LHC, comparing current capabilities with future prospects at a Linear Collider, with comprehensive error analysis.

Contribution

It applies the SFitter framework to map Higgs coupling measurements onto an effective theory, incorporating detailed error treatment including correlations.

Findings

LHC can provide initial Higgs coupling measurements

Future Linear Collider can refine these measurements

Sophisticated error analysis enhances measurement accuracy

Abstract

After the discovery of a Higgs boson, the next step is to measure its properties and test their accordance with the predictions of the Standard Model, in particular the couplings of the Higgs boson. In this talk we discuss what information the LHC will be able to give us over the coming years, and what remains as a task for a future Linear Collider. Using the well-established SFitter framework, we map measurements onto a weak-scale effective theory with general Higgs boson couplings. Our sophisticated error treatment allows us to take all theory and experimental errors, including arbitrary correlations, fully into account.