NNLO Photon Fragmentation within Antenna Subtraction
Thomas Gehrmann, Robin Sch\"urmann
TL;DR
This paper advances NNLO QCD predictions for photon production by incorporating photon fragmentation contributions using antenna subtraction and fragmentation antenna functions.
Contribution
It introduces a method to include photon fragmentation in NNLO calculations through the use of fragmentation antenna functions within the antenna subtraction framework.
Findings
Successful identification of photon in collinear limits.
Implementation of fragmentation antenna functions for subtraction.
Enhanced accuracy in photon production cross section predictions.
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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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions