IR - Improved DGLAP - CS Theory : Kernels , Parton Distributions , Reduced Cross Sections †

Abstract

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 hadronhadron or lepton-hadron cross section is unchanged order-by-order in αs at large squaredmomentum 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 scenarios. † Work partly supported by US DOE grant DE-FG02-05ER41399 and by NATO grant PST.CLG.980342.

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Cite this paper

@inproceedings{Ward2008IRI, title={IR - Improved DGLAP - CS Theory : Kernels , Parton Distributions , Reduced Cross Sections †}, author={Bennie F. L. Ward}, year={2008} }