학술논문
Improved parton showers at large transverse momenta.
Document Type
Article
Author
Source
Subject
*PARTONS
*SCATTERING (Physics)
*ASTROPHYSICAL radiation
*MOMENTUM (Mechanics)
*ALGORITHMS
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*
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Language
ISSN
1434-6044
Abstract
Several methods to improve the parton-shower description of hard processes by an injection of matrix-element-based information have been presented over the years. In this article we study (re)weighting schemes for the first/hardest emission. One objective is to provide a consistent matching of the POWHEG next-to-leading order generator to the Pythia shower algorithms. Another is to correct the default behaviour of these showers at large transverse momenta, based on a comparison with real-emission matrix elements. [ABSTRACT FROM AUTHOR]