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arxiv: 0803.4177 · v2 · submitted 2008-03-28 · ✦ hep-ph

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Sector Decomposition

Gudrun Heinrich
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classification ✦ hep-ph
keywords integralsdecompositionparametersectoralgorithmapplicationconstructivedetail
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Sector decomposition is a constructive method to isolate divergences from parameter integrals occurring in perturbative quantum field theory. We explain the general algorithm in detail and review its application to multi-loop Feynman parameter integrals as well as infrared divergent phase-space integrals over real radiation matrix elements.

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  1. CoLoRFulNNLO for hadron collisions: integrating the iterated single unresolved subtraction terms

    hep-ph 2025-12 unverdicted novelty 7.0

    The integrated iterated single-unresolved approximate cross section in CoLoRFulNNLO for hadron collisions is a convolution of the Born cross section with an insertion operator.