If no Higgs then what?

Understand

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.