TH seminar: A Framework for Multijet Predictions and its application to Higgs production at the LHC [Dr. Jeppe R. Andersen (CERN)]

Thursday 2 Apr 2009, 16:15 → 17:15 Europe/Brussels

I present a new framework for calculating multi-jet observables. The framework is based on the factorisation of general scattering amplitudes in the kinematical limit of large invariant mass between all particles. We will briefly discuss earlier attempts at utilising this factorisation through the BFKL equation, and some of its shortcomings. We show that by further constraining the analyticity of scattering amplitudes away from the limits, we get good agreement order by order with full, fixed order perturbation theory, and therefore get firm predictions on the all-order behaviour. As an example, we study Higgs boson production through gluon fusion in association with at least two jets at the LHC. The technique is readily applicable to other multi-jet processes.