A matrix-element-based modification of the parton shower

Details A matrix-element-based modification of the parton shower A matrix-element-based modification of the parton shower

1998-04-17

arxiv.org/abs/hep-ph/9804317v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

1+24 pages, LaTeX2e, 8 eps figures attached

Scientific paper

The transverse momentum distribution of W+/- bosons at hadron colliders is well described by a parton-shower model for small pT values, but not for large ones. This article is an attempt to give a better description of the distribution by using corrections derived from the matrix-element formalism. The parton shower for qqbar->W+/- has been modified to resemble the matrix elements of qqbar->gW and qg->q'W at large pT values. Comparisons between different approaches are presented at sqrt{s}=1800 GeV. The results are also compared with experimental data from the D0 collaboration at Fermilab.

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