Higgs couplings as a probe of New Physics

TL;DR

This paper discusses how Higgs boson decay and production measurements can be parameterized to test for new physics, emphasizing the importance of flexible approaches adaptable to evolving experimental data.

Contribution

It introduces a framework for parameterizing Higgs processes tailored for probing new physics, considering data quality and model independence.

Findings

Current simple parameterizations are limited but will improve with future LHC data.

Different parameterization approaches are necessary for comprehensive testing.

Detailed information sharing is crucial for exploring Higgs physics beyond the Standard Model.

Abstract

We consider the Higgs boson decay processes and its production and provide a parameterisation tailored for testing models of new physics. The choice of a particular parameterisation depends on a non-obvious balance of quantity and quality of the available experimental data, envisaged purpose for the parameterisation and degree of model independence. At present only simple parameterisations with a limited number of fit parameters can be performed, but this situation will improve with the forthcoming experimental LHC data. It is therefore important that different approaches are considered and that the most detailed information is made available to allow testing the different aspects of the Higgs boson physics and the possible hints beyond the Standard Model.