The Strongly-Interacting Light Higgs

By G. Giudice, Christophe Grojean, A. Pomarol, Riccardo Rattazzi. 2007

1,019 citations recorded by the source corpus.

We develop a simple description of models where electroweak symmetry breaking is triggered by a light composite Higgs, which emerges from a strongly-interacting sector as a pseudo-Goldstone boson. Two parameters broadly characterize these models: mρ, the mass scale of the new resonances and gρ, their coupling. An effective low-energy Lagrangian approach proves to be useful for LHC and ILC phenomenology below the scale mρ. We identify two classes of operators: those that are genuinely sensitive to the new strong force and those that are sensitive to the spectrum of the resonances only. Phenomenological prospects for the LHC and the ILC include the study of high-energy longitudinal vector boson scattering, strong double-Higgs production and anomalous Higgs couplings. We finally discuss the possibility that the top quark could also be a composite object of the strong sector.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4c571fc7762fa31ee1081b9081d480e477b0e10e

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Citations in the corpus

UFO - The Universal FeynRules Output (2011, methodology): “In the following, we illustrate the UFO format on the example of the Strongly Interacting Light Higgs (SILH) model [51].”
Non-resonant new physics in top pair production at hadron colliders (2010, methodology): “The composite models are characterized by a new strong interaction responsible for the breaking of the electroweak symmetry and broadly parametrized by two parameters [44]: a dimensionless coupling gρ and a mass scale mρ.”
A framework for Higgs characterisation (2013, neutral): “ written down; the parametrisation we adopt is general enough to account for them all. We point out that, for a CP-even state, this parametrisation is in one-to-one correspondence with those of refs. [13,30] (see e.g. eq. (3.46) of ref. [30]), and equivalent to eq. (3) of ref. [26]. For a CP-odd sta”
Electroweak constraints on flavorful effective theories (2015, methodology): “e parameters we constrain in our formalism and the Wilson coeﬃcients of the dimension six operators in two particular bases - the Warsaw basis proposed in Ref. [2] and the SILH basis proposed in Ref. [41]. For completeness, we analyze the constraints on the oﬀ-diagonal couplings to quarks arising fr”
Higgs Physics at the HL-LHC and HE-LHC (2019, methodology): “This process can therefore provide unique information to test the nature of the Higgs boson, whether it is a composite or elementary state, and whether or not it emerges as a Nambu-Goldstone boson (NGB) of some new dynamics at the TeV scale [40, 449, 450].”
Addressing the B-physics anomalies in a fundamental Composite Higgs model (2018, methodology): “The contributions of the model to flavour-universal electroweak precision tests is analogous to the one of all composite Higgs models [110].”
Implications of a light Higgs in composite models (2012, methodology): “To address quantitatively the question of the mass we will use the simplified description of CH models with partial compositeness developed in [1] (see [8] for an alternative construction and [10, 11, 12, 13] for related work).”
Model-independent precision constraints on dimension-6 operators (2014, background): “Thus, the WW production provides qualitatively new information about higher-dimensional operators in the effective Lagrangian that cannot be extracted from the pole observables alone.”
Updated global SMEFT fit to Higgs, diboson and electroweak data (2018, methodology): “Another popular basis in the literature is referred to as the SILH basis [10, 52].”
Composite Higgs boson pair production at the LHC (2010, methodology): “In ref. [ 15 ] an effective Lagrangian for a composite light Higgs boson was constructed.”