Little Higgs models and their phenomenology

By M. Perelstein. 2005

364 citations recorded by the source corpus.

This article reviews the Little Higgs models of electroweak symmetry breaking and their phenomenology. Little Higgs models incorporate a light composite Higgs boson and remain perturbative until a scale of order 10 TeV, as required by precision electroweak data. The collective symmetry breaking mechanism, which forms the basis of Little Higgs models, is introduced. An explicit, fully realistic implementation of this mechanism, the Littlest Higgs model, is then discussed in some detail. Several other implementations, including simple group models and models with T parity, are also reviewed. Precision electroweak constraints on a variety of Little Higgs models are summarized. If a Little Higgs model is realized in nature, the predicted new particles should be observable at the Large Hadron Collider (LHC). The expected signatures, as well as the experimental sensitivities and the possible strategies for confirming the Little Higgs origin of new particles, are discussed. Finally, several other related topics are briefly reviewed, including the ultraviolet completions of Little Higgs models, as well as the implications of these models for flavor physics and cosmology.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/8fe284ef2f3df26feeb17e818541da1b07a76ed1

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In Astronomy and Astrophysics

1. M. Raidal
2. Carlo Rovelli
3. A. Wulzer
4. G. Panico
5. Georg Weiglein
6. M. Xiao
7. A. Gritsan
8. Fabio Maltoni

In Nuclear and High Energy Physics

1. Cms Collaboration
2. Atlas Collaboration
3. M. Raidal
4. Fabio Maltoni
5. Olivier Mattelaer
6. A. Wulzer
7. The Cms Collaboration
8. G. Panico

Citations in the corpus

• Vector boson fusion at multi-TeV muon colliders (2020, background): “The phenomenology of such models is rich, well-documented [168–172], and has led to LHC searches for vector-like top and bottom quarks in a variety of final states [173–178].”
• The Composite Nambu-Goldstone Higgs (2015, background): “[46, 47]), which foresees a parametric reduction of the Higgs mass term in the potential relative to the quartic, leading to a naturally small VEV.”
• Interpreting LHC Higgs results from natural new physics perspective (2012, methodology): “in the Simplest Little Higgs model with an [SU(3)/SU(2)]2 coset structure [60–65] when taking the limit f2 f1.”
• Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum (2019, background): “This signature arises frequently in theoretical models based on supersymmetry (SUSY) [9–18] as well as in a broad range of other theories [19–24] extending the SM.”
• ILC Higgs White Paper (2013, background): “Numerous realizations of little Higgs models can be found in the literature [181, 182, 183].”