Color coherence in multi-jet final states
High Energy Physics - Phenomenology
2009-11-13 v1
Abstract
We discuss coherent QCD radiation from space-like parton branching and its effects on multi-jet final states at high-energy hadron colliders. Coherence effects for small longitudinal momentum fractions x are not included in the branching algorithms of standard shower Monte Carlo event generators. On the other hand, they are taken into account only partially in perturbative next-to-leading-order calculations for multi-jets. Such effects are present to all orders in alpha_s and can become logarithmically enhanced with \sqrt{s} / E_T, where E_T is the hardest jet transverse energy. We present results of summing coherence effects to all orders by parton-branching Monte Carlo methods based on transverse-momentum dependent matrix elements.
Cite
@article{arxiv.0812.3026,
title = {Color coherence in multi-jet final states},
author = {F. Hautmann and H. Jung},
journal= {arXiv preprint arXiv:0812.3026},
year = {2009}
}