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arxiv: hep-ph/0407016 · v1 · submitted 2004-07-01 · ✦ hep-ph

Numerical Evaluation of One-Loop Diagrams Near Exceptional Momentum Configurations

classification ✦ hep-ph
keywords numericalconfigurationsdiagramsevaluationexceptionalmomentumnearone-loop
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One problem which plagues the numerical evaluation of one-loop Feynman diagrams using recursive integration by part relations is a numerical instability near exceptional momentum configurations. In this contribution we will discuss a generic solution to this problem. As an example we consider the case of forward light-by-light scattering.

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