CP Studies and Non-Standard Higgs Physics

TL;DR

This paper reviews various non-standard Higgs models beyond the Standard Model, exploring their theoretical frameworks, phenomenology, and potential experimental signatures relevant for collider physics and cosmology.

Contribution

It provides a comprehensive overview of non-standard Higgs scenarios, including detailed phenomenological analyses and implications for collider experiments.

Findings

Different non-standard Higgs models predict unique collider signatures

CP violation can be introduced in extended Higgs sectors

Implications for cosmology and electroweak symmetry breaking

Abstract

There are many possibilities for new physics beyond the Standard Model that feature non-standard Higgs sectors. These may introduce new sources of CP violation, and there may be mixing between multiple Higgs bosons or other new scalar bosons. Alternatively, the Higgs may be a composite state, or there may even be no Higgs at all. These non-standard Higgs scenarios have important implications for collider physics as well as for cosmology, and understanding their phenomenology is essential for a full comprehension of electroweak symmetry breaking. This report discusses the most relevant theories which go beyond the Standard Model and its minimal, CP-conserving supersymmetric extension: two-Higgs-doublet models and minimal supersymmetric models with CP violation, supersymmetric models with an extra singlet, models with extra gauge groups or Higgs triplets, Little Higgs models, models in extra dimensions, and models with technicolour or other new strong dynamics. For each of these scenarios, this report presents an introduction to the phenomenology, followed by contributions on more detailed theoretical aspects and studies of possible experimental signatures at the LHC and other colliders.