Composite Higgs Sketch

Abstract

The coupling of a composite Higgs to the standard model fields can deviate substantially from the standard model values. In this case perturbative unitarity might break down before the scale of compositeness is reached, which would suggest that additional composites should lie well below this scale. In this paper we account for the presence of an additional spin 1 custodial triplet of rhos. We examine the implications of requiring perturbative unitarity up to the compositeness scale and find that one has to be close to saturating certain unitarity sum rules involving the Higgs and the rho couplings. Given these restrictions on the parameter space we investigate the main phenomenological consequences of the spin 1 triplet. We find that they can substantially enhance the Higgs di-photon rate at the LHC even with a reduced Higgs coupling to gauge bosons. The main existing LHC bounds arise from di-boson searches, especially in the experimentally clean channel where the charged rhos decay to a W-boson and a Z, which then decay leptonically. We find that a large range of interesting parameter space with 700 GeV < m(rho) < 2 TeV is currently experimentally viable.

37 pages, 12 figures; v4: sum rule corrected, conclusions unchanged

References in corpus (10)

• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• A custodial symmetry for Zbb
• Light scalar at LHC: the Higgs or the dilaton?
• Higgs Low-Energy Theorem (and its corrections) in Composite Models
• A GIM Mechanism from Extra Dimensions
• The Gaugephobic Higgs
• Vector Mesons and an Interpretation of Seiberg Duality
• Jet Substructure and the Search for Neutral Spin-One Resonances in Electroweak Boson Channels
• (Dys)Zphilia or a custodial breaking Higgs at the LHC
• Gaugephobic Higgs Signals at the LHC

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