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arXiv · 2110.02617

NNLO Photon Fragmentation within Antenna Subtraction

Thomas Gehrmann·Robin Schürmann
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Abstract

We report on our recent progress towards including the photon fragmentation contribution in next-to-next-to-leading order (NNLO) QCD predictions for photon production cross sections. This extension to previous NNLO calculations requires the identification of the photon in singular parton-photon collinear limits. We discuss how these limits can be subtracted within antenna subtraction using fragmentation antenna functions and we outline their integration.

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Thomas Gehrmann, Robin Schürmann. 2021-10-06. NNLO Photon Fragmentation within Antenna Subtraction. https://arxiv.org/abs/2110.02617

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