Composite Higgses

By B. Bellazzini, Csaba Csáki, J. Serra. The European Physical Journal C, 2014

354 citations recorded by the source corpus.

For the closing article in this volume on supersymmetry, we consider the alternative options to SUSY theories: we present an overview of composite Higgs models in light of the discovery of the Higgs boson. The small value of the physical Higgs mass suggests that the Higgs quartic is likely loop generated; thus models with tree-level quartics will generically be more tuned. We classify the various models (including bona fide composite Higgs, little Higgs, holographic composite Higgs, twin Higgs and dilatonic Higgs) based on their predictions for the Higgs potential, review the basic ingredients of each of them, and quantify the amount of tuning needed, which is not negligible in any model. We explain the main ideas for generating flavor structure and the main mechanisms for protecting against large flavor violating effects, and we present a summary of the various coset models that can result in realistic pseudo-Goldstone Higgses. We review the current experimental status of such models by discussing the electroweak precision, flavor, and direct search bounds, and we comment on the UV completions of such models and on ways to incorporate dark matter.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/539f81be47c337f632007edea0be867e8832f624

How researchers see this paper

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In Astronomy and Astrophysics

1. Andrea Tesi
2. A. Wulzer
3. G. Panico
4. Giacomo Cacciapaglia
5. Claudio Pica
6. Lian-tao Wang
7. D. Curtin
8. A. Thamm

In Nuclear and High Energy Physics

1. Cms Collaboration
2. Gudrun Heinrich
3. G. Panico
4. A. Wulzer
5. Atlas Collaboration
6. Andrea Tesi
7. Giacomo Cacciapaglia
8. Claudio Pica

Citations in the corpus

• Jet substructure at the Large Hadron Collider (2018, methodology): “Examples for such models are the topcolor model containing a Z ′ boson [272] as well as composite Higgs models [273, 274, 275, 276, 277, 278, 279, 280].”
• Softness and amplitudes’ positivity for spinning particles (2016, neutral): “[54, 55] for a review on partial compositeness.”
• Electroweak phase transition and baryogenesis in composite Higgs models (2018, neutral): “For general reviews of composite Higgs models [18], we refer the reader to [2, 19, 20].”
• Twin Higgs mechanism and a composite Higgs boson (2015, result): “See also [15] for a comparison between Little Higgs and Composite Higgs.”
• Discovering uncolored naturalness in exotic Higgs decays (2015, methodology): “In the Composite Higgs framework [5] or its 5D-duals, the Higgs is realized as a pseudo Nambu-Goldstone boson (pNGB) transforming under an approximate shift symmetry.”
• Fundamental composite dynamics: A review (2020, background): “Many other symmetry breaking patterns can be used, irrespective of their origin [48, 49].”
• Composite leptoquarks and anomalies in B-meson decays (2014, neutral): “For a recent review see [40].”
• Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, background): “While the precision electroweak constraints from the T parameter are avoided with a custodial symmetry and those from the S parameter are ameliorated with gρ & 3, the most stringent constraints actually arise from flavor observables which gives rise to an approximate lower bound on the scale of spon”