Universality and gluonic pole matrix elements

Leonard Gamberg, Asmita Mukherjee, Piet Mulders

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationSpin Physics
Subtitle of host publication18th International Spin Physics Symposium
EditorsXiaochao Zheng, Yelena Prok, Matt Poelker, Donald G. Crabb, Simonetta Liuti, Donal B. Day
PublisherAmerican Institute of Physics Inc.
Pages427-432
Number of pages6
ISBN (Print)9780735406865
DOIs
StatePublished - Aug 4 2009
Event18th International Spin Physics Symposium 2008 - Charlottesville, United States
Duration: Oct 6 2008Oct 11 2008

Publication series

NameAIP Conference Proceedings
Volume1149
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other18th International Spin Physics Symposium 2008
CountryUnited States
CityCharlottesville
Period10/6/0810/11/08

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • Cite this

    Gamberg, L., Mukherjee, A., & Mulders, P. (2009). Universality and gluonic pole matrix elements. In X. Zheng, Y. Prok, M. Poelker, D. G. Crabb, S. Liuti, & D. B. Day (Eds.), Spin Physics: 18th International Spin Physics Symposium (pp. 427-432). (AIP Conference Proceedings; Vol. 1149). American Institute of Physics Inc.. https://doi.org/10.1063/1.3215682