Efficiency improvements for the numerical computation of NLO corrections
High Energy Physics - Phenomenology
2015-06-05 v2
Abstract
In this paper we discuss techniques, which lead to a significant improvement of the efficiency of the Monte Carlo integration, when one-loop QCD amplitudes are calculated numerically with the help of the subtraction method and contour deformation. The techniques discussed are: holomorphic and non-holomorphic division into sub-channels, optimisation of the integration contour, improvement of the ultraviolet subtraction terms, importance sampling and antithetic variates in loop momentum space, recurrence relations.
Keywords
Cite
@article{arxiv.1205.2096,
title = {Efficiency improvements for the numerical computation of NLO corrections},
author = {Sebastian Becker and Christian Reuschle and Stefan Weinzierl},
journal= {arXiv preprint arXiv:1205.2096},
year = {2015}
}
Comments
34 pages, version to be published