Universality and gluonic pole matrix elements

Leonard Gamberg, Asmita Mukherjee, Piet Mulders

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


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.
Number of pages6
ISBN (Print)9780735406865
StatePublished - Aug 4 2009
Event18th International Spin Physics Symposium 2008 - Charlottesville, United States
Duration: Oct 6 2008Oct 11 2008

Publication series

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


Other18th International Spin Physics Symposium 2008
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


Dive into the research topics of 'Universality and gluonic pole matrix elements'. Together they form a unique fingerprint.

Cite this