Momentum sum rules for fragmentation functions
High Energy Physics - Phenomenology
2012-07-11 v2 High Energy Physics - Experiment
Abstract
Momentum sum rules for fragmentation functions are considered. In particular, we give a general proof of the Sch\"afer-Teryaev sum rule for the transverse momentum dependent Collins function. We also argue that corresponding sum rules for related fragmentation functions do not exist. Our model-independent analysis is supplemented by calculations in a simple field-theoretical model.
Cite
@article{arxiv.1002.4393,
title = {Momentum sum rules for fragmentation functions},
author = {S. Meissner and A. Metz and D. Pitonyak},
journal= {arXiv preprint arXiv:1002.4393},
year = {2012}
}
Comments
12 pages; v2: Eqs. (44,46) added, minor additional changes, to appear in Phys. Lett. B