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High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order
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High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order
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High-energy factorization in QCD is investigated beyond leading order and its relationship to the factorization theorem of mass singularities is established to any collinear accuracy. Flavour non-singlet observables are shown to be regular at small x order by order in perturbation theory. In the singlet sector, we derive the relevant master equations for the space-like evolution of gluons and quarks. Their solution enables us to sum next-to-leading corrections to the small-x behaviour of quark anomalous dimensions and deep inelastic scattering coefficient functions. We present results in both MSbar and DIS factorization schemes.
Forward citations
Cited by 4 Pith papers
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N³LO DIS implementation in VFNS with improved massive neutral-current coefficient approximation for PDF fits.
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PDF evolution in alternative factorisation schemes
Derives NLO splitting functions and anomalous dimensions for PDFs in alternative factorization schemes and interprets their leading x-behavior as a modified effective evolution scale.
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Scheme-invariant stratified factorization algebras for inclusive deep inelastic scattering
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