Partially composite Higgs models: phenomenology and RG analysis

Tommi Alanne*, Diogo Buarque Franzosi, Mads T. Frandsen, Mette L. A. Kristensen, Aurora Meroni, Martin Rosenlyst

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We study the phenomenology of partially composite-Higgs models where electroweak symmetry breaking is dynamically induced, and the Higgs is a mixture of a composite and an elementary state. The models considered have explicit realizations in terms of gauge-Yukawa theories with new strongly interacting fermions coupled to elementary scalars and allow for a very SM-like Higgs state. We study constraints on their parameter spaces from vacuum stability and perturbativity as well as from LHC results and find that requiring vacuum stability up to the compositeness scale already imposes relevant constraints. A small part of parameter space around the classically conformal limit is stable up to the Planck scale. This is however already strongly disfavored by LHC results. in different limits, the models realize both (partially) composite-Higgs and (bosonic) technicolor models and a dynamical extension of the fundamental Goldstone-Higgs model. Therefore, they provide a general framework for exploring the phenomenology of composite dynamics.

Original languageEnglish
Article number51
JournalJournal of High Energy Physics
Volume2018
Issue number1
Number of pages26
ISSN1126-6708
DOIs
Publication statusPublished - 2018

Keywords

  • Beyond Standard Model
  • Global Symmetries
  • Spontaneous Symmetry Breaking
  • Technicolor and Composite Models

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