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Exponentiation at partonic threshold for the Drell-Yan cross section

Tim Oliver Eynck·Eric Laenen·Lorenzo Magnea
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Abstract

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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Tim Oliver Eynck, Eric Laenen, Lorenzo Magnea. 2003-10-23. Exponentiation at partonic threshold for the Drell-Yan cross section. https://arxiv.org/abs/hep-ph/0310271

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