If no Higgs then what?
arXiv:1108.1183 · doi:10.1007/JHEP11(2011)028
Abstract
In the absence of a Higgs boson, the perturbative description of the Standard Model ceases to make sense above a TeV. Heavy spin-1 fields coupled to W and Z bosons can extend the validity of the theory up to higher scales. We carefully identify regions of parameter space where a minimal addition - a single spin-1 custodial SU(2) triplet resonance - allows one to retain perturbative control in all channels. Elastic scattering of longitudinal W and Z bosons alone seems to permit a very large cut-off beyond the Naive Dimensional Analysis expectation. We find however that including scattering of the spin-1 resonances then leads to an earlier onset of strong coupling. Most importantly for LHC searches, we define a self-consistent set-up with a well-defined range of validity without recourse to unitarization schemes whose physical meaning is obscure. We discuss the LHC phenomenology and the discovery reach for these electroweak resonances and mention the possibility of a nightmare scenario with no Higgs nor resonance within the LHC reach. Finally, we discuss the effects of parity breaking in the heavy resonance sector which reduces the contributions to the S parameter.
34 pages, 10 figures; v2: constraints updated, references added; v3: replaced troubleshooting figures, can be viewed now by non-Mac users, RIP Steve
References in corpus (21)
- Parton distributions for the LHC
- Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
- LHC Signals for Warped Electroweak Neutral Gauge Bosons
- A GIM Mechanism from Extra Dimensions
- A Three Site Higgsless Model
- LHC Signals for Warped Electroweak Charged Gauge Bosons
- LHC Signatures of New Gauge Bosons in the Minimal Higgsless Model
- Vector Mesons and an Interpretation of Seiberg Duality
- Ultra Visible Warped Model From Flavor Triviality & Improved Naturalness
- The S-parameter in Holographic Technicolor Models
- Heavy Vectors in Higgs-less models
- Describing viable technicolor scenarios
- Jet Substructure and the Search for Neutral Spin-One Resonances in Electroweak Boson Channels
- One-Loop Corrections to the S and T Parameters in a Three Site Higgsless Model
- Drell-Yan production at the LHC in a four site Higgsless model
- General Sum Rules for WW Scattering in Higgsless Models: Equivalence Theorem and Deconstruction Identities
- Drell-Yan production of Heavy Vectors in Higgsless models
- Signals for New Spin-1 Resonances in Electroweak Gauge Boson Pair Production at the LHC
- Search for resonant WW and WZ production in ppbar collisions at ?s = 1.96 TeV
- NDA and perturbativity in Higgsless models
- Z' production at the LHC in the four-site Higgsless model
Cited by in corpus (28)
- On the effect of resonances in composite Higgs phenomenology
- Heavy Vector Triplets: Bridging Theory and Data
- The 4D Composite Higgs
- Vector boson fusion at NNLO in QCD: SM Higgs and beyond
- Strong Higgs Interactions at a Linear Collider
- Composite Higgs Sketch
- Alternatives to an Elementary Higgs
- Phenomenology and Cosmology of an Electroweak Pseudo-Dilaton and Electroweak Baryons
- Three-particle templates for boosted Higgs
- Inverse Seesaw Mechanism in Nonsupersymmetric SO(10), Proton Lifetime, Nonunitarity Effects, and a Low-mass Z' Boson
- Exploring T and S parameters in Vector Meson Dominance Models of Strong Electroweak Symmetry Breaking
- Phenomenology of Induced Electroweak Symmetry Breaking
- Composite spin-1 resonances at the LHC
- The Effect of Composite Resonances on Higgs decay into two photons
- Unitarity implications of diboson resonance in the TeV region for Higgs physics
- Vector Boson scattering at the LHC: counting experiments for unitarized models in a full six fermion approach
- A minimally tuned composite Higgs model from an extra dimension
- Proton decay and new contribution to neutrino-less double beta decay in SO(10) with low-mass Z-prime boson, observable n-nbar oscillation, lepton flavor violation, and rare kaon decay
- Partially Composite Higgs in Supersymmetry
- Top partner-resonance interplay in a composite Higgs framework
- Present Bounds on New Neutral Vector Resonances from Electroweak Gauge Boson Pair Production at the LHC
- High Energy WW Scattering at the LHC with the Matrix Element Method
- Locality in Theory Space
- Probing strongly interacting W's at the ILC with polarized beams
- Distinguishing among Technicolor/Warped Scenarios in Dileptons
- Unitarity In An Alternative Electroweak Theory
- Strong electroweak symmetry breaking (or, if no SM Higgs, then what?)
- A Simplified Model of Heavy Vector Singlets for the LHC and Future Colliders