Partonic Pole Matrix Elements for Fragmentation
High Energy Physics - Phenomenology
2009-05-05 v2 High Energy Physics - Experiment
Abstract
A model-independent analysis of collinear three-parton correlation functions for fragmentation is performed. By investigating their support properties it is shown, in particular, that the so-called partonic pole matrix elements vanish. This sheds new light on the understanding of transverse single spin asymmetries in various hard semi-inclusive reactions. Moreover, it gives additional strong evidence for the universality of transverse-momentum-dependent fragmentation functions.
Cite
@article{arxiv.0812.3783,
title = {Partonic Pole Matrix Elements for Fragmentation},
author = {S. Meissner and A. Metz},
journal= {arXiv preprint arXiv:0812.3783},
year = {2009}
}
Comments
4 pages, 2 figures; minor changes, matches journal version