Exponentiation at partonic threshold for the Drell-Yan cross section

Details Exponentiation at partonic threshold for the Drell-Yan cross section Exponentiation at partonic threshold for the Drell-Yan cross section

2003-10-23

arxiv.org/abs/hep-ph/0310271v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented by L. Magnea at the 11th International Workshop on Deep Inelastic Scattering (DIS 2003), St. Petersburg, Russia

Scientific paper

The techniques leading to the resummation of threshold logarithms in the Drell-Yan cross section and other processes can be used to show that also terms independent on the Mellin variable N exponentiate. Comparison with explicit two-loop calculations shows that within this class of terms the exponentiation of the one-loop result together with the running of the coupling is the dominant effect at two loops.

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