%0 Journal Article
%T Holographic models of composite Higgs in the Veneziano limit. Part I. Bosonic sector
%+ Laboratoire Charles Coulomb (L2C)
%+ Centre de Physique Théorique - UMR 7332 (CPT)
%A Elander, Daniel
%A Frigerio, Michele
%A Knecht, Marc
%A Kneur, Jean-Loic
%< avec comité de lecture
%@ 1126-6708
%J Journal of High Energy Physics
%I Springer
%V 03
%P 182
%8 2021
%D 2021
%Z 2011.03003
%R 10.1007/JHEP03(2021)182
%K Veneziano
%K Dilaton
%K Boson: mass spectrum
%K Symmetry breaking: flavor
%K Gauge field theory
%K Holography
%K Scaling: dimension
%K Mass: gap
%K Model: composite
%K Technicolor and Composite Models
%K AdS-CFT Correspondence
%K Gauge-gravity correspondence
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
%Z Physics [physics]/High Energy Physics - Lattice [hep-lat]
%Z Physics [physics]/High Energy Physics - Theory [hep-th]Journal articles
%X We study strongly-coupled, approximately scale-invariant gauge theories, which develop a mass gap in the infrared. We argue that a large number of fermion flavours is most suitable to provide an ultraviolet completion for the composite Higgs scenario. The holographic approach allows to describe the qualitative features of the non-perturbative dynamics in the Veneziano limit. We introduce new bottom-up holographic models, which incorporate the backreaction of flavour on the geometry, and show that this can correlate the mass gap to the scale of flavour-symmetry breaking. We compute the mass spectrum for the various composite bosonic states, and study its dependence on the scaling dimension of the symmetry-breaking operators, as well as on the number of flavours. The different regions with a light dilaton are critically surveyed. We carefully assess the domain of validity of the holographic approach, and compare it with lattice simulations and the Nambu-Jona-Lasinio model.
%G English
%2 https://hal.science/hal-03022749/document
%2 https://hal.science/hal-03022749/file/Elander2021_Article_HolographicModelsOfCompositeHi.pdf
%L hal-03022749
%U https://hal.science/hal-03022749
%~ UNIV-TLN
%~ CNRS
%~ UNIV-AMU
%~ CPT
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ CPT-PARTICULES
%~ ANR
%~ UM-2015-2021