Reduction of one-loop amplitudes at the integrand level - NLO QCD calculations
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Jagiellonian University
Materia
Jet cross-sections General algorithm
Date
2008Referencia bibliográfica
Ossola, G.; Papadopoulos, C.G.; Pittau, R. Reduction of one-loop amplitudes at the integrand level - NLO QCD calculations. Acta Physica Polonica B, 39(7): 1685-1693 (2008). [http://hdl.handle.net/10481/32797]
Abstract
The recently proposed method (OPP) to extract the coefficients of the scalar one-loop integrals to any multi-particle (sub)-amplitude is described. Within this method no analytical information on the structure of the amplitude is needed, allowing for a purely numerical, but still algebraic, implementation of the algorithm. The algorithm can be used to automatically perform one-loop calculation both in QCD and in the EW Theory. As an application, we give QCD one-loop results for the process pp → ZZZ at the LHC.
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