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arXiv · 1605.05845

Summing threshold logs in a parton shower

Zoltan Nagy·Davison E. Soper
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Abstract

When parton distributions are falling steeply as the momentum fractions of the partons increases, there are effects that occur at each order in $α_s$ that combine to affect hard scattering cross sections and need to be summed. We show how to accomplish this in a leading approximation in the context of a parton shower Monte Carlo event generator.

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Zoltan Nagy, Davison E. Soper. 2016-09-27. Summing threshold logs in a parton shower. https://doi.org/10.1007/jhep10(2016)019

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