High-Energy Vector Boson Scattering after the Higgs Discovery

Understand

Weak vector-boson W,Z scattering at high energy probes the Higgs sector and is most sensitive to any new physics associated with electroweak symmetry breaking.

• We show that in the presence of the 125 GeV Higgs boson, a conventional effective-theory analysis fails for this class of processes.
• We propose to extrapolate the effective-theory ansatz by an extension of the parameter-free K-matrix unitarization prescription, which we denote as direct T-matrix unitarization.
• We generalize this prescription to arbitrary non-perturbative models and describe the implementation, as an asymptotically consistent reference model matched to the low-energy effective theory.