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Sudakov resummation of multiparton QCD cross sections

R. Bonciani·S. Catani·M. L. Mangano·P. Nason
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Abstract

We present the general expressions for the resummation, up to next-to-leading logarithmic accuracy, of Sudakov-type logarithms in processes with an arbirtrary number of hard-scattering partons. These results document the formulae used by the authors in several previous phenomenological studies. The resummation formulae presented here, which are valid for phase-space factorizable observables, determine the resummation correction in a process-independent fashion. All process dependence is encoded in the colour and flavour structure of the leading order and virtual one-loop amplitudes, and in Sudakov weights associated to the cross section kinematics. We explicitly illustrate the application to the case of Drell--Yan and prompt-photon production.

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R. Bonciani, S. Catani, M. L. Mangano, P. Nason. 2003-07-02. Sudakov resummation of multiparton QCD cross sections. https://doi.org/10.1016/j.physletb.2003.09.068

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