NNLO evolution of deep-inelastic structure functions: the non-singlet case

Details NNLO evolution of deep-inelastic structure functions: the non-singlet case NNLO evolution of deep-inelastic structure functions: the non-singlet case

1999-07-23

arxiv.org/abs/hep-ph/9907472v1

Nucl.Phys.B568:263-286,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages, LaTeX, 13 eps-figures

Scientific paper

10.1016/S0550-3213(99)00668-9

We study the next-to-next-to-leading order (NNLO) evolution of flavour non-singlet quark densities and structure functions in massless perturbative QCD. Present information on the corresponding three-loop splitting functions is used to derive parametrizations of these quantities, including Bjorken-x dependent estimates of their residual uncertainties. Compact expressions are also provided for the exactly known, but rather involved two-loop coefficient functions. The size of the NNLO corrections and their effect on the stability under variations of the renormalization scale are investigated. The residual uncertainty of the three-loop splitting functions does not lead to appreciable effects for x > 10^-2. Inclusion of the NNLO contributions reduces the main theoretical uncertainty of alpha_s determinations from non-singlet scaling violations by more than a factor of two.

Affiliated with

Also associated with

No associations

Rating

NNLO evolution of deep-inelastic structure functions: the non-singlet case does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with NNLO evolution of deep-inelastic structure functions: the non-singlet case, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NNLO evolution of deep-inelastic structure functions: the non-singlet case will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-198455