ExSample -- A Library for Sampling Sudakov-Type Distributions

Details ExSample -- A Library for Sampling Sudakov-Type Distributions ExSample -- A Library for Sampling Sudakov-Type Distributions

2011-08-31

arxiv.org/abs/1108.6182v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 6 figures, minor changes and figures added, corresponds to published version

Scientific paper

Sudakov-type distributions are at the heart of generating radiation in parton showers as well as contemporary NLO matching algorithms along the lines of the POWHEG algorithm. In this paper, the C++ library ExSample is introduced, which implements adaptive sampling of Sudakov-type distributions for splitting kernels which are in general only known numerically. Besides the evolution variable, the splitting kernels can depend on an arbitrary number of other degrees of freedom to be sampled, and any number of further parameters which are fixed on an event-by-event basis.

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