Calculating Scattering Amplitudes Efficiently

L. Dixon

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arXiv · hep-ph/9601359

Calculating Scattering Amplitudes Efficiently

L. Dixon

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Abstract

We review techniques for more efficient computation of perturbative scattering amplitudes in gauge theory, in particular tree and one-loop multi-parton amplitudes in QCD. We emphasize the advantages of (1) using color and helicity information to decompose amplitudes into smaller gauge-invariant pieces, and (2) exploiting the analytic properties of these pieces, namely their cuts and poles. Other useful tools include recursion relations, special gauges and supersymmetric rearrangements.

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L. Dixon. 1996-12-11. Calculating Scattering Amplitudes Efficiently. https://arxiv.org/abs/hep-ph/9601359

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