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On the non-cancellation of infrared singularities in collisions of massive quarks

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arxiv 2011.04701 v1 pith:P2Y4T7FC submitted 2020-11-09 hep-ph hep-th

Fabrizio Caola , Kirill Melnikov , Davide Napoletano , Lorenzo Tancredi This is my paper
classification hep-phhep-th
keywords infraredsingularitiescontributionscrossmassiveprocessesquarkssections
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We discuss the infrared structure of processes with massive quarks in the initial state. It is well known that, starting from next-to-next-to-leading order in perturbative QCD, such processes exhibit a violation of the Bloch-Nordsieck theorem, in that the sum of real and virtual contributions to partonic cross sections contains uncanceled infrared singularities. The main purpose of this paper is to present a simple physical argument that elucidates the origin of these singularities and simplifies the derivation of infrared-singular contributions to heavy-quark initiated cross sections.

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Cited by 1 Pith paper

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  1. Soft Factorisation and Exponentiation from Schwinger-Space Geometry

    hep-th 2025-06 conditional novelty 6.0 of 10

    Soft-hard factorization and exponentiation of infrared divergences in QED are derived from graph Laplacians and tropical rays in Schwinger parameter space.

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