Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering

Details Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering

2006-07-20

arxiv.org/abs/hep-ph/0607228v1

JHEP 0701:076,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

39 pages, 9 figures

Scientific paper

10.1088/1126-6708/2007/01/076

Renormalization-group methods in soft-collinear effective theory are used to perform the resummation of large perturbative logarithms for deep-inelastic scattering in the threshold region x->1. The factorization theorem for the structure function F_2(x,Q^2) for x->1 is rederived in the effective theory, whereby contributions from the hard scale Q^2 and the jet scale Q^2(1-x) are encoded in Wilson coefficients of effective-theory operators. Resummation is achieved by solving the evolution equations for these operators. Simple analytic results for the resummed expressions are obtained directly in momentum space, and are free of the Landau-pole singularities inherent to the traditional moment-space results. We show analytically that the two methods are nonetheless equivalent order by order in the perturbative expansion, and perform a numerical comparison up to next-to-next-to-leading order in renormalization-group improved perturbation theory.

Affiliated with

Also associated with

No associations

Rating

Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering 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 Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-79126