Hamburg 2016 – scientific programme
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T: Fachverband Teilchenphysik
T 31: Elektroschwache Wechselwirkung und BSM (Theorie)
T 31.5: Talk
Monday, February 29, 2016, 17:50–18:05, VMP8 SR 105
Resonances at the LHC beyond the Higgs: The Scalar/Tensor Case — Wolfgang Kilian1, Thorsten Ohl2, Jürgen Reuter3, and •Marco Sekulla4 — 1Department of Physics, University of Siegen, Germany — 2Faculty of Physics and Astronomy, Würzburg University, Germany — 3DESY Theory Group, Hamburg, Germany — 4Institute for Theoretical Physics, Karlsruhe Institute of Technology, Germany
Weak vector boson scattering (VBS) at high energies will be one of the key measurements in current and upcoming LHC runs. It is most sensitive to any new physics associated with electroweak symmetry breaking. However, a conventional EFT analysis will fail at high energies.
In this talk I present an extension of the bottom-up EFT, which includes the 125 GeV Higgs boson. Within a simplified model the effects of generic tensor and scalar resonances are considered. The spurious degrees of freedom of tensor resonances that would lead to bad high-energy behavior are treated using a gen- eralization of the Stueckelberg formalism. To ensure that the scattering amplitudes are well behaved on the whole phase space, the T-matrix unitarization procedure is used.
The implementation of this model into the Monte Carlo generator WHIZARD can be used for further studies at the LHC as I will show with exemplary plots.