Effective Lagrangian for a light Higgs-like scalar

TL;DR

This paper refines the effective Lagrangian framework for a light Higgs-like scalar, clarifying how to distinguish weakly from strongly interacting electroweak symmetry breaking and facilitating its implementation in computational tools.

Contribution

It provides a clearer strategy for analyzing the nature of electroweak symmetry breaking and details how to incorporate the effective Lagrangian into automated calculation tools.

Findings

Clarified criteria to distinguish weakly and strongly interacting dynamics

Outlined implementation methods for effective Lagrangian in computational tools

Enhanced understanding of Higgs boson phenomenology

Abstract

We reconsider the effective Lagrangian that describes a light Higgs-like boson and better clarify a few issues which were not exhaustively addressed in the previous literature. In particular we highlight the strategy to determine whether the dynamics responsible for the electroweak symmetry breaking is weakly or strongly interacting. We also discuss how the effective Lagrangian can be implemented into automatic tools for the calculation of Higgs decay rates and production cross sections.