Determining Higgs couplings with a model-independent analysis of h ->gamma gamma

TL;DR

This paper introduces a model-independent method to determine Higgs boson couplings, especially in the gamma gamma decay channel, enhancing the ability to identify potential new physics at the LHC.

Contribution

It presents a novel approach for constraining Higgs couplings using exclusive gamma gamma analyses, facilitating collaboration and improving discrimination of new physics signals.

Findings

Demonstrates the discriminating power of exclusive analyses

Highlights the importance of sharing information between experimentalists and theorists

Provides a framework for model-independent coupling determination

Abstract

Discovering a Higgs boson at the LHC will address a major outstanding issue in particle physics but will also raise many new questions. A concerted effort to determine the couplings of this new state to other Standard Model fields will be of critical importance. Precise knowledge of these couplings can serve as a powerful probe of new physics, and will be needed in attempts to accommodate such a new boson within specific models. In this paper, we present a method for constraining these couplings in a model-independent way, focusing primarily on an exclusive analysis of the gamma gamma final state. We demonstrate the discriminating power of fully exclusive analyses, and discuss ways in which information can be shared between experimentalists and theorists in order to facilitate collaboration in the task of establishing the true origins of any new physics discovered at the LHC.