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Using Feynman's Tree Theorem to Evaluate Loop Integrals Numerically
classification
✦ hep-ph
keywords
integralsintegrationloopfeynmanphase-spacetheoremtreealongside
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We report on a new method for the numerical evaluation of loop integrals, based on the Feynman Tree Theorem. The loop integrals are replaced by phase-space integration over fictitious extra on-shell particles. This integration can be performed alongside with the Monte-Carlo integration of ordinary phase-space, directly leading to NLO event generation.
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