Wuppertal 2015 – scientific programme
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T: Fachverband Teilchenphysik
T 17: Elektroschwache Physik (Theorie)
T 17.9: Talk
Monday, March 9, 2015, 16:00–16:15, K.11.20 (K5)
High-energy Vector Boson Scattering after the Higgs Discovery — Wolfgang Kilian1, Thorsten Ohl2, Jürgen Reuter3, and •Marco Sekulla1 — 1University of Siegen, Siegen, Germany — 2Würzburg University, Würzburg, Germany — 3DESY, Hamburg, Germany
Weak vector boson scattering (VBS)at high energies will be one of the key measurements in the upcoming LHC runs. It is very sensitive to any new physics associated with electroweak symmetry breaking. But a conventional EFT analysis will fail at high energies, especially in the presence of the light 125 GeV Higgs boson.
In this talk I present how to extend the EFT to a simplified model by adding additional resonances to VBS and therefore increase the energy validity of the theoretical description.
Furthermore I introduce the T-matrix unitarization scheme as
an extension of the K-matrix unitarization prescription.
It provides an asymptotically consistent reference model, which has been matched to the low-energy effective theory of arbitrary non-perturbative and perturbative models.