Higgs production and decay in models of a warped extra dimension with a bulk Higgs

  • Paul R. Archer
  • Marcela Carena
  • Adrian CarmonaEmail author
  • Matthias Neubert
Open Access
Regular Article - Theoretical Physics


Warped extra-dimension models in which the Higgs boson is allowed to propagate in the bulk of a compact AdS5 space are conjectured to be dual to models featuring a partially composite Higgs boson. They offer a framework with which to investigate the implications of changing the scaling dimension of the Higgs operator, which can be used to reduce the constraints from electroweak precision data. In the context of such models, we calculate the cross section for Higgs production in gluon fusion and the H → γγ decay rate and show that they are finite (at one-loop order) as a consequence of gauge invariance. The extended scalar sector comprising the Kaluza-Klein excitations of the Standard Model scalars is constructed in detail. The largest effects are due to virtual KK fermions, whose contributions to the cross section and decay rate introduce a quadratic sensitivity to the maximum allowed value y of the random complex entries of the 5D anarchic Yukawa matrices. We find an enhancement of the gluon-fusion cross section and a reduction of the H →γγ rate as well as of the tree-level Higgs couplings to fermions and electroweak gauge bosons. We perform a detailed study of the correlated signal strengths for different production mechanisms and decay channels as functions of y , the mass scale of Kaluza-Klein resonances and the scaling dimension of the composite Higgs operator.


Phenomenology of Field Theories in Higher Dimensions 


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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Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Paul R. Archer
    • 1
  • Marcela Carena
    • 2
    • 3
  • Adrian Carmona
    • 4
    Email author
  • Matthias Neubert
    • 1
    • 5
  1. 1.PRISMA Cluster of Excellence & Mainz Institute for Theoretical PhysicsJohannes Gutenberg UniversityMainzGermany
  2. 2.Theoretical Physics DepartmentFermilabBataviaU.S.A.
  3. 3.Enrico Fermi Institute and KICPUniversity of ChicagoChicagoU.S.A.
  4. 4.Institut für Theoretische PhysikETH ZürichZürichSwitzerland
  5. 5.Department of Physics, LEPPCornell UniversityIthacaU.S.A.

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