The third-order QCD corrections to deep-inelastic scattering by photon exchange

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dc.creatorVermaseren, J. A. M.
dc.creatorVogt, A.
dc.creatorMoch, S.
dc.date2005-04-26
dc.date.accessioned2026-07-07T10:29:30Z
dc.date.available2026-07-07T10:29:30Z
dc.descriptionWe compute the full three-loop coefficient functions for the structure functions F_2 and F_L in massless perturbative QCD. The results for F_L complete the next-to-next-to-leading order description of unpolarized electromagnetic deep-inelastic scattering. The third-order coefficient functions for F_2 form, at not too small values of the Bjorken variable x, the dominant part of the next-to-next-to-next-to-leading order corrections, thus facilitating improved determinations of the strong coupling alpha_s from scaling violations. The three-loop corrections to F_L are larger than those for F_2. Especially for the latter quantity the expansion in powers of alpha_s is very stable, for photon virtualities Q^2 >> 1 GeV^2, over the full x-range accessible to fixed-target and collider measurements.
dc.description137 pages latex, 20 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0504242
dc.identifierhttp://arxiv.org/abs/hep-ph/0504242
dc.identifierNucl.Phys.B724:3-182,2005
dc.identifierdoi:10.1016/j.nuclphysb.2005.06.020
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177822
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe third-order QCD corrections to deep-inelastic scattering by photon exchange
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