High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order

Details High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order

1994-05-26

arxiv.org/abs/hep-ph/9405388v1

Nucl.Phys. B427 (1994) 475-524

Physics

High Energy Physics

High Energy Physics - Phenomenology

46 pages (+ 7 figures not included, available from the authors), Latex, Cavendish-HEP-94/01

Scientific paper

10.1016/0550-3213(94)90636-X

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.

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