Erratum: Next-to-leading order evolution of generalized parton distributions for DESY HERA and HERMES [Phys. Rev. D65, 056012 (2002)]
نویسندگان
چکیده
منابع مشابه
Dynamical next-to-next-to-leading order parton distributions and the perturbative stability of FL(x, Q 2)
It is shown that the previously noted extreme perturbative instability of the longitudinal structure function FL(x,Q ) in the small Bjorken-x region, is a mere artefact of the commonly utilized ‘standard’ gluon distributions. In particular it is demonstrated that using the appropriate – dynamically generated – parton distributions at NLO and NNLO, FL(x, Q ) turns out to be perturbatively rather...
متن کاملDijet Production at HERA in Next-to-Leading Order
Two-jet cross sections in deep inelastic scattering at HERA are calculated in next-to-leading order. The QCD corrections are implemented in a new ep → n jets event generator, MEPJET, which allows to analyze arbitrary jet definition schemes and general cuts in terms of parton 4-momenta. First results are presented for the JADE, the cone and the kT schemes. For the W -scheme, disagreement with pr...
متن کاملTransverse parton distribution functions at next-to-next-to-leading order: the quark-to-quark case.
We present a calculation of the perturbative quark-to-quark transverse parton distribution function at next-to-next-to-leading order based on a gauge invariant operator definition. We demonstrate for the first time that such a definition works beyond the first nontrivial order. We extract from our calculation the coefficient functions relevant for a next-to-next-to-next-to-leading logarithmic Q...
متن کاملNext-to-Next-to-Leading Order QCD Corrections to the Photon’s Parton Structure
The next-to-next-to-leading order (NNLO) corrections in massless perturbative QCD are derived for the parton distributions of the photon and the deep-inelastic structure functions F γ 1 and F γ 2 . We present the full photonic coefficient functions at order ααs and calculate the first six even-integer moments of the corresponding O(ααs ) photon-quark and photon-gluon splitting functions togethe...
متن کاملNext-to-leading Order Evolution of Transversity Distributions and Soffer’s Inequality
We present a calculation of the two-loop splitting functions for the evolution of the twist-2 ’transversity’ parton densities of transversely polarized nucleons. We study the implications of our results for Soffer’s inequality for the case of valence quark densities. PACS numbers: 13.88.+e, 12.38.Bx CERN-TH/97-132 June 1997
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.66.079903