IR-improved DGLAP-CS theory: Kernels, parton distributions, reduced cross sections

Journal Article · Mon Sep 15 00:00:00 EDT 2008 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2007.11.010· OSTI ID:21163733

Ward, B F.L. , ^[1]

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1. Department of Physics, Baylor University, Waco, TX 76798-7316 (United States)

It is shown that exact, amplitude-based resummation allows IR-improvement of the usual DGLAP-CS theory. This results in a new set of kernels, parton distributions and attendant reduced cross sections, so that the QCD perturbative result for the respective hadron-hadron or lepton-hadron cross section is unchanged order-by-order in {alpha}{sub s} at large squared-momentum transfers. We compare these new objects with their usual counter-parts and illustrate the effects of the IR-improvement in some phenomenological cases of interest with an eye toward precision applications in LHC physics scenarios00.

• OSTI ID: 21163733
• Journal Information: Annals of Physics (New York), Vol. 323, Issue 9; Other Information: DOI: 10.1016/j.aop.2007.11.010; PII: S0003-4916(07)00174-1; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

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