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

Understand

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.