@inproceedings{6ef946d7a01f445ea5a77044e102ca4b,
title = "Universality and gluonic pole matrix elements",
abstract = "We investigate the spectral properties of quark-gluon-quark and quark-quark-gluon correlators in order to study gluonic pole matrix elements. Such matrix elements appear both for distribution functions such as the Sivers function, and fragmentation functions such as the Collins function. We find that for a large class of spectator models, the contribution of the gluonic pole matrix element for fragmentation functions vanishes. This result is important in the study of universality for fragmentation functions.",
author = "Leonard Gamberg and Asmita Mukherjee and Piet Mulders",
note = "Funding Information: L.G. thanks the organizers of SPIN 2008 for the invitation to present this work. L.G. acknowledges support from U.S. Department of Energy under contract DE-FG02-07ER41460. Publisher Copyright: {\textcopyright} 2009 American Institute of Physics.; 18th International Spin Physics Symposium 2008 ; Conference date: 06-10-2008 Through 11-10-2008",
year = "2009",
month = aug,
day = "4",
doi = "10.1063/1.3215682",
language = "English (US)",
isbn = "9780735406865",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
pages = "427--432",
editor = "Xiaochao Zheng and Yelena Prok and Matt Poelker and Crabb, {Donald G.} and Simonetta Liuti and Day, {Donal B.}",
booktitle = "Spin Physics",
}