On the effect of resonances in composite Higgs phenomenology

We consider a generic composite Higgs model based on the coset SO(5) / SO(4) and study its phenomenology beyond the leading low-energy effective lagrangian approximation. Our basic goal is to introduce in a controllable and simple way the lowest-lying, possibly narrow, resonances that may exist is s...

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Bibliographic Details
Published in:The journal of high energy physics 2011-10, Vol.2011 (10), Article 81
Main Authors: Contino, Roberto, Pappadopulo, Duccio, Marzocca, David, Rattazzi, Riccardo
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Depletion
Elementary Particles
High energy physics
Phenomenology
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Resonance scattering
String Theory
Tensors
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Summary:We consider a generic composite Higgs model based on the coset SO(5) / SO(4) and study its phenomenology beyond the leading low-energy effective lagrangian approximation. Our basic goal is to introduce in a controllable and simple way the lowest-lying, possibly narrow, resonances that may exist is such models. We do so by proposing a criterion that we call partial UV completion . We characterize the simplest cases, corresponding respectively to a scalar in either singlet or tensor representation of SO(4) and to vectors in the adjoint of SO(4). We study the impact of these resonances on the signals associated to high-energy vector boson scattering, pointing out for each resonance the characteristic patterns of depletion and enhancement with respect to the leading-order chiral lagrangian. En route we derive the O ( p 4 ) general chiral lagrangian and discuss its peculiar accidental and approximate symmetries.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP10(2011)081