Combining QCD Matrix Elements at Next-to-Leading Order with Parton Showers in Electroproduction
Abstract
We present a method to combine next-to-leading order (NLO) matrix elements in QCD with leading logarithmic parton showers by applying a suitably modified version of the phase-space-slicing method. The method consists of subsuming the NLO corrections into a scale-dependent phase-space-slicing parameter, which is then automatically adjusted to cut out the leading order, virtual, soft and collinear contributions in the matrix element calculation. In this way a positive NLO weight is obtained, which can be redistributed by a parton shower algortihm. As an example, we display the method for single-jet inclusive cross sections at O(alpha_s) in electroproduction. We numerically compare the modified version of the phase-space-slicing method with the standard approach and find very good agreement on the percent level.
Keywords
Cite
@article{arxiv.hep-ph/0007172,
title = {Combining QCD Matrix Elements at Next-to-Leading Order with Parton Showers in Electroproduction},
author = {B. Pötter},
journal= {arXiv preprint arXiv:hep-ph/0007172},
year = {2009}
}
Comments
21 pages, 2 eps figures. Revised section 2. To appear in PRD