A comparison of efficient methods for the computation of Born gluon amplitudes

Details A comparison of efficient methods for the computation of Born gluon amplitudes A comparison of efficient methods for the computation of Born gluon amplitudes

2006-02-22

arxiv.org/abs/hep-ph/0602204v1

JHEP 0603 (2006) 056

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages

Scientific paper

10.1088/1126-6708/2006/03/056

We compare four different methods for the numerical computation of the pure gluonic amplitudes in the Born approximation. We are in particular interested in the efficiency of the various methods as the number n of the external particles increases. In addition we investigate the numerical accuracy in critical phase space regions. The methods considered are based on (i) Berends-Giele recurrence relations, (ii) scalar diagrams, (iii) MHV vertices and (iv) BCF recursion relations.

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