High-energy vector boson scattering after the Higgs boson discovery

2014/08/31 by Wolfgang Kilian, W. Kilian, T. Ohl +5 · 2 citations
Physics and Astronomy · #Ansatz #Boson #Electroweak interaction #Gauge boson #Gauge theory #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #Symmetry breaking #Technicolor #Vector boson #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.91.096007

published as Phys. Rev. D 91, 096007 (2015) · 42 pages, 11 figures

openalex publication_date 2015/05/20 · arxiv created 2016/03/14 · arxiv updated 2016/03/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

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 nonperturbative models and describe the implementation as an asymptotically consistent reference model matched to the low-energy effective theory. We present exemplary numerical results for full six-fermion processes at the LHC.

Citations

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Cited by

• Parallel adaptive Monte Carlo integration with the event generator WHIZARD
• Extending the limits of Higgs effective theory