# Münster 2017 – wissenschaftliches Programm

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# T: Fachverband Teilchenphysik

## T 17: Quantenfeldtheorie (perturbativ)

### T 17.9: Vortrag

### Montag, 27. März 2017, 18:45–19:00, VSH 11

**Unitarization for Vector Boson Scattering at the LHC** — •Genessis Perez, Marco Sekulla, and Dieter Zeppenfeld — Institute for Theoretical Physics, KIT, Karlsruhe, Germany

Weak vector boson scattering (VBS) at high energies will be one of the key measurements in current and upcoming LHC runs: it is very sensitive to new physics associated with electroweak symmetry breaking. However, a pure effective Lagrangian analysis is insufficient because observable deviations from the SM typically lead to unitarity violation within the energy reach of the LHC.

To obtain valid predictions, the T/K-matrix unitarization prescription is widely used. However, an implementation of this scheme is only available for a small number of effective Lagrangian operators for VBS due to the difficulty to handle VBS with arbitrarily polarized off-shell vector bosons in the full *VVjj* production process.

In this Talk, I introduce a procedure of the T/K-matrix unitarization scheme for generic operators within VBS and describe its implementation in the Monte Carlo generator VBFNLO. The implementation can be used for further studies at the LHC as I will show with some exemplary distributions.