Susy Theories and QCD: Numerical Approaches

Details Susy Theories and QCD: Numerical Approaches Susy Theories and QCD: Numerical Approaches

2011-09-29

arxiv.org/abs/1109.6527v1

Physics

High Energy Physics

High Energy Physics - Theory

57 pages, 13 figures. Invited review for a special issue of Journal of Physics A devoted to "Scattering Amplitudes in Gauge Th

Scientific paper

We review on-shell and unitarity methods and discuss their application to precision predictions for LHC physics. Being universal and numerically robust, these methods are straight-forward to automate for next-to-leading-order computations within Standard Model and beyond. Several state-of-the-art results including studies of W/Z+3-jet and W+4-jet production have explicitly demonstrated the effectiveness of the unitarity method for describing multi-parton scattering. Here we review central ideas needed to obtain efficient numerical implementations. This includes on-shell loop-level recursions, the unitarity method, color management and further refined tricks.

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