Threshold-improved predictions for charm production in deep-inelastic scattering
N.A. Lo Presti, H. Kawamura (Liverpool U., Dept. Math.), S. Moch, (DESY, Zeuthen), A. Vogt (Liverpool U., Dept. Math.)
TL;DR
This paper enhances predictions for charm production in deep-inelastic scattering by deriving next-to-next-to-leading order threshold contributions, improving theoretical accuracy for structure function calculations.
Contribution
It provides the complete threshold-enhanced contributions at NNLO for the gluon coefficient function in charm production, extending previous results.
Findings
Threshold corrections are significant at NNLO.
Improved accuracy in charm structure function predictions.
Framework for extending to differential cross sections.
Abstract
We have extended previous results on the threshold expansion of the gluon coefficient function for the charm contribution to the deep-inelastic structure function F_2 by deriving all threshold-enhanced contributions at the next-to-next-to-leading order. The size of these corrections is briefly illustrated, and a first step towards extending this improvement to more differential charm-production cross sections is presented.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions