Matrix-Element Corrections to Parton Shower Algorithms

Details Matrix-Element Corrections to Parton Shower Algorithms Matrix-Element Corrections to Parton Shower Algorithms

1994-10-31

arxiv.org/abs/hep-ph/9410414v1

Comp.Phys.Commun.90:95-101,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LU TP 94-17

Scientific paper

10.1016/0010-4655(95)00064-M

We discuss two ways in which parton shower algorithms can be supplemented by matrix-element corrections to ensure the correct hard limit: by using complementary phase-space regions, or by modifying the shower itself. In the former case, existing algorithms are self-consistent only if the total correction is small. In the latter case, existing algorithms are never self-consistent, a problem that is particularly severe for angular-ordered parton shower algorithms. We show how to construct self-consistent algorithms in both cases. The postscript file for this paper can also be obtained by anonymous ftp from thep.lu.se in the file pub/Preprints/lu_tp_94_17.ps

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