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Title: Gluonic Pole Matrix Elements and Universality

Abstract

We investigate the spectral properties of quark-quark-gluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle 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.

Authors:
 [1];  [2];  [3]
  1. Penn State University Berks, Department of Physics Reading, Pennsylvania 19610 (United States)
  2. Indian Institute of Technology, Department of Physics, Powai, Mumbai 400076 (India)
  3. Vrije University, Department of Physics and Astronomy, NL-1081 HV Amsterdam (Netherlands)
Publication Date:
OSTI Identifier:
21293472
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1105; Journal Issue: 1; Conference: DIFFRACTION 2008: International workshop on diffraction in high energy physics, La Londe-les-Maures (France), 9-14 Sep 2008; Other Information: DOI: 10.1063/1.3122209; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPTON EFFECT; DISTRIBUTION FUNCTIONS; GLUONS; HADRONS; MATRIX ELEMENTS; QUANTUM CHROMODYNAMICS; QUARKS; RENORMALIZATION

Citation Formats

Gamberg, Leonard, Mukherjee, Asmita, and Mulders, Piet. Gluonic Pole Matrix Elements and Universality. United States: N. p., 2009. Web. doi:10.1063/1.3122209.
Gamberg, Leonard, Mukherjee, Asmita, & Mulders, Piet. Gluonic Pole Matrix Elements and Universality. United States. doi:10.1063/1.3122209.
Gamberg, Leonard, Mukherjee, Asmita, and Mulders, Piet. Mon . "Gluonic Pole Matrix Elements and Universality". United States. doi:10.1063/1.3122209.
@article{osti_21293472,
title = {Gluonic Pole Matrix Elements and Universality},
author = {Gamberg, Leonard and Mukherjee, Asmita and Mulders, Piet},
abstractNote = {We investigate the spectral properties of quark-quark-gluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle 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.},
doi = {10.1063/1.3122209},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1105,
place = {United States},
year = {2009},
month = {3}
}