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arXiv · 0811.1412

Higher order QCD corrections to charged-lepton deep-inelastic scattering and global fits of parton distributions

S. Alekhin·S. Moch
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Abstract

We study the perturbative QCD corrections to heavy-quark structure functions of charged-lepton deep-inelastic scattering and their impact on global fits of parton distributions. We include the logarithmically enhanced terms near threshold due to soft gluon resummation in the QCD corrections at next-to-next-to-leading order. We demonstrate that this approximation is sufficient to describe the available HERA data in most parts of the kinematic region. The threshold-enhanced next-to-next-to-leading order corrections improve the agreement between predictions based on global fits of the parton distribution functions and the HERA collider data even in the small-x region.

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S. Alekhin, S. Moch. 2009-01-18. Higher order QCD corrections to charged-lepton deep-inelastic scattering and global fits of parton distributions. https://doi.org/10.1016/j.physletb.2009.01.004

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