Next-to-next-to-leading logarithmic threshold resummation for deep-inelastic scattering and the Drell-Yan process

Details Next-to-next-to-leading logarithmic threshold resummation for deep-inelastic scattering and the Drell-Yan process Next-to-next-to-leading logarithmic threshold resummation for deep-inelastic scattering and the Drell-Yan process

2000-10-14

arxiv.org/abs/hep-ph/0010146v1

Phys.Lett. B497 (2001) 228-234

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, 2 eps-figures

Scientific paper

10.1016/S0370-2693(00)01344-7

The soft-gluon resummation exponents G^N in moment space are investigated for the quark coefficient functions in deep-inelastic structure functions and the quark-antiquark contribution to the Drell-Yan cross section dsigma/dM. Employing results from two- and three-loop calculations we obtain the next-to-next-to-leading logarithmic terms alpha_s (alpha_s ln N)^n of G^N to all orders in the strong coupling constant alpha_s. These new contributions facilitate a reliable assessment of the numerical effect and the stability of the large-N expansion.

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