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Locally finite two-loop QCD amplitudes from IR universality for electroweak production

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arxiv 2212.12162 v1 pith:R75XIGBL submitted 2022-12-23 hep-ph hep-th

Charalampos Anastasiou , George Sterman This is my paper
classification hep-phhep-th
keywords numbersubtractionstwo-loopamplitudeselectroweakinfraredintegrationuniversality
verification ladder T0 review T1 audit T2 compute T3 formal
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We describe the implementation of infrared subtractions for two-loop QCD corrections to quark-antiquark annihilation to electroweak final states. The subtractions are given as form-factor integrands whose integrals are known. The resulting subtracted amplitudes are amenable to efficient numerical integration. Our procedure is based on the universality of infrared singularities and requires a relatively limited set of subtractions, whose number grows as the number of two-loop diagrams, rather than with the number of singular regions of integration.

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Cited by 3 Pith papers

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  1. Pseudo-Evanescent Feynman Integrals from Local Subtraction

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  3. Finite Massless Pentaboxes

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