2012/12/31 by D. Espriu, Domènec Espriu, Brian Yencho · 62 citations
Physics and Astronomy · #Boson #Electroweak interaction #Gauge boson #Gauge theory #Higgs boson #Higgs sector #High-Energy Particle Collisions Research #Large Hadron Collider #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Symmetry breaking #Technicolor #Unitarity #Vector boson #hep-ph
paper · pdf · doi:10.1103/physrevd.87.055017
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 87(5) (American Physical Society) · 33 pages, 7 figures. Updated version published in Phys. Rev. D with corrected typos and additional references
openalex publication_date 2013/03/18 · arxiv created 2013/04/19 · arxiv updated 2013/04/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
WW scattering is dominated at high energies by their longitudinal components, which are the most sensitive to the nature of the electroweak symmetry breaking. Prior to the discovery at the LHC of a Higgs-like particle, unitarization tools were extensively used to show that, in the absence of a light Higgs boson, new resonances resulting from the would-be strongly interacting electroweak sector would appear, and furthermore these techniques would approximately predict their masses, widths, and signal strengths. With the discovery of a Higgs-like particle now firmly established, we reinvestigate these techniques assuming this particle couples exactly as in the standard model (SM), but still being open to the possibility of an extended symmetry breaking sector. While the SM itself is free from problems with perturbative unitarity in the electroweak sector, ``anomalous'' self-couplings of the vector bosons---low-energy remnants of such higher-energy symmetry breaking sectors---are easily shown to reintroduce them. We demonstrate how new resonances should still appear in the scattering of electroweak vector bosons after imposing constraints from unitarity, and we discuss their ability to be probed with current and future LHC data.