GenEvA (II): A phase space generator from a reweighted parton shower

Details GenEvA (II): A phase space generator from a reweighted parton shower GenEvA (II): A phase space generator from a reweighted parton shower

2008-01-28

arxiv.org/abs/0801.4028v2

JHEP0812:011,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

54 pages, 20 figures, v2: corrected typos, added references

Scientific paper

10.1088/1126-6708/2008/12/011

We introduce a new efficient algorithm for phase space generation. A parton shower is used to distribute events across all of multiplicity, flavor, and phase space, and these events can then be reweighted to any desired analytic distribution. To verify this method, we reproduce the e+e- -> n jets tree-level result of traditional matrix element tools. We also show how to improve tree-level matrix elements automatically with leading-logarithmic resummation. This algorithm is particularly useful in the context of a new framework for event generation called GenEvA. In a companion paper [arXiv:0801.4026], we show how the GenEvA framework can address contemporary issues in event generation.

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