Leading-color fully differential two-loop soft corrections to QCD dipole showers
High Energy Physics - Phenomenology
2018-10-22 v2
Abstract
We compute the next-to-leading order corrections to soft-gluon radiation differentially in the one-emission phase space. We show that their contribution to the evolution of color dipoles can be obtained in a modified subtraction scheme, such that both one- and two-emission terms are amenable to Monte-Carlo integration. The two-loop cusp anomalous dimension is recovered naturally upon integration over the full phase space. We present two independent implementations of the new algorithm in the two event generators Pythia and Sherpa, and we compare the resulting fully differential simulation to the CMW scheme.
Keywords
Cite
@article{arxiv.1805.03757,
title = {Leading-color fully differential two-loop soft corrections to QCD dipole showers},
author = {Falko Dulat and Stefan Höche and Stefan Prestel},
journal= {arXiv preprint arXiv:1805.03757},
year = {2018}
}
Comments
22 pages, 8 figures