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Journal of High Energy Physics

, 2017:98 | Cite as

Production of vector resonances at the LHC via WZ-scattering: a unitarized EChL analysis

  • R. L. Delgado
  • A. Dobado
  • D. Espriu
  • C. Garcia-Garcia
  • M. J. Herrero
  • X. Marcano
  • J. J. Sanz-Cillero
Open Access
Regular Article - Theoretical Physics

Abstract

In the present work we study the production of vector resonances at the LHC by means of the vector boson scattering WZWZ and explore the sensitivities to these resonances for the expected future LHC luminosities. We are assuming that these vector resonances are generated dynamically from the self interactions of the longitudinal gauge bosons, WL and ZL, and work under the framework of the electroweak chiral Lagrangian to describe in a model independent way the supposedly strong dynamics of these modes. The properties of the vector resonances, mass, width and couplings to the W and Z gauge bosons are derived from the inverse amplitude method approach. We implement all these features into a single model, the IAM-MC, adapted for MonteCarlo, built in a Lagrangian language in terms of the electroweak chiral Lagrangian and a chiral Lagrangian for the vector resonances, which mimics the resonant behavior of the IAM and provides unitary amplitudes. The model has been implemented in MadGraph, allowing us to perform a realistic study of the signal versus background events at the LHC. In particular, we have focused our study on the ppWZjj type of events, discussing first on the potential of the hadronic and semileptonic channels of the final WZ, and next exploring in more detail the most clear signals. These are provided by the leptonic decays of the gauge bosons, leading to a final state with 1 + 1 2 + νjj,  = e, μ, having a very distinctive signature, and showing clearly the emergence of the resonances with masses in the range of 1.5–2.5 TeV, which we have explored.

Keywords

Beyond Standard Model Chiral Lagrangians Effective Field Theories Higgs Physics 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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© The Author(s) 2017

Authors and Affiliations

  1. 1.Departamento de Física Teórica IUniversidad Complutense de MadridMadridSpain
  2. 2.Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB)Universitat de BarcelonaBarcelonaSpain
  3. 3.Departamento de Física Teórica and Instituto de Física Teórica, IFT-UAM/CSICUniversidad Autónoma de MadridMadridSpain

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