Dispersive approach in Sudakov resummation

Details Dispersive approach in Sudakov resummation Dispersive approach in Sudakov resummation

2006-10-24

arxiv.org/abs/hep-ph/0610310v1

AIPConf.Proc.892:268-270,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, talk given at Quark Confinement and the Hadron Spectrum 7, Ponta Delgada, Azores, Portugal, 2-7 Sep 2006, LaTeX, uses

Scientific paper

10.1063/1.2714391

The dispersive approach to power corrections is given a precise implementation, valid beyond single gluon exchange, in the framework of Sudakov resummation for deep inelastic scattering and the Drell-Yan process. It is shown that the assumption of infrared finite Sudakov effective couplings implies the universality of the corresponding infrared fixed points. This property is closely tied to the universality of the virtual contributions to space-like and time-like processes, encapsulated in the second logarithmic derivative of the quark form factor.

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