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On the effect of resonances in composite Higgs phenomenology

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Abstract

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.

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Authors and Affiliations

  1. Dipartimento di Fisica, Università di Roma “La Sapienza” and INFN, Piazzale Aldo Moro 5, 00185, Roma, Italy

    Roberto Contino & David Marzocca

  2. Institut de Théorie des Phénomènes Physiques, EPFL, 1015, Lausanne, Switzerland

    Duccio Pappadopulo & Riccardo Rattazzi

  3. SISSA and INFN, Via Bonomea 265, 34136, Trieste, Italy

    David Marzocca

Authors
  1. Roberto Contino
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  2. Duccio Pappadopulo
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  3. David Marzocca
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  4. Riccardo Rattazzi
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Correspondence to Duccio Pappadopulo.

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Contino, R., Pappadopulo, D., Marzocca, D. et al. On the effect of resonances in composite Higgs phenomenology. J. High Energ. Phys. 2011, 81 (2011). https://doi.org/10.1007/JHEP10(2011)081

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