Automated calculations for multi-leg processes

Details Automated calculations for multi-leg processes Automated calculations for multi-leg processes

2007-07-23

arxiv.org/abs/0707.3342v2

PoS ACAT:005,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages, plenary talk given at the ACAT 07 conference, Amsterdam, 2007; v2: references added

Scientific paper

The search for signals of new physics at the forthcoming LHC experiments involves the analysis of final states characterised by a high number of hadronic jets or identified particles. Precise theoretical predictions for these processes require the computation of scattering amplitudes with a large number of external particles and beyond leading order in perturbation theory. The complexity of a calculation grows with the number of internal loops as well as with the number of external legs. Automatisation of at least next-to-leading order calculations for LHC processes is therefore a timely task. I will discuss various approaches.

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