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Title: Model independent analysis of gluonic pole matrix elements and universality of transverse-momentum-dependent fragmentation functions

Abstract

Gluonic pole matrix elements explain the appearance of single spin asymmetries (SSA) in high-energy scattering processes. They involve a combination of operators which are odd under time reversal (T-odd). Such matrix elements appear in principle both for parton distribution functions and parton fragmentation functions. We show that for parton fragmentation functions, these gluonic pole matrix elements vanish as a consequence of the analytic structure of scattering amplitudes in quantum chromodynamics. This result is important in the study of the universality of transverse-momentum-dependent (TMD) fragmentation functions.

Authors:
 [1];  [2];  [3]
  1. Division of Science, Penn State University-Berks, Reading, Pennsylvania 19610 (United States)
  2. Physics Department, Indian Institute of Technology Bombay, Powai, Mumbai 400076 (India)
  3. Department of Physics and Astronomy, VU University, NL-1081 HV Amsterdam (Netherlands)
Publication Date:
OSTI Identifier:
21537687
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.83.071503; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; DISTRIBUTION FUNCTIONS; FRAGMENTATION; MATRIX ELEMENTS; QUANTUM CHROMODYNAMICS; SCATTERING; SCATTERING AMPLITUDES; SPIN; TRANSVERSE MOMENTUM; AMPLITUDES; ANGULAR MOMENTUM; FIELD THEORIES; FUNCTIONS; LINEAR MOMENTUM; PARTICLE PROPERTIES; QUANTUM FIELD THEORY

Citation Formats

Gamberg, L. P., Mukherjee, A., and Mulders, P. J.. Model independent analysis of gluonic pole matrix elements and universality of transverse-momentum-dependent fragmentation functions. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.071503.
Gamberg, L. P., Mukherjee, A., & Mulders, P. J.. Model independent analysis of gluonic pole matrix elements and universality of transverse-momentum-dependent fragmentation functions. United States. doi:10.1103/PHYSREVD.83.071503.
Gamberg, L. P., Mukherjee, A., and Mulders, P. J.. Fri . "Model independent analysis of gluonic pole matrix elements and universality of transverse-momentum-dependent fragmentation functions". United States. doi:10.1103/PHYSREVD.83.071503.
@article{osti_21537687,
title = {Model independent analysis of gluonic pole matrix elements and universality of transverse-momentum-dependent fragmentation functions},
author = {Gamberg, L. P. and Mukherjee, A. and Mulders, P. J.},
abstractNote = {Gluonic pole matrix elements explain the appearance of single spin asymmetries (SSA) in high-energy scattering processes. They involve a combination of operators which are odd under time reversal (T-odd). Such matrix elements appear in principle both for parton distribution functions and parton fragmentation functions. We show that for parton fragmentation functions, these gluonic pole matrix elements vanish as a consequence of the analytic structure of scattering amplitudes in quantum chromodynamics. This result is important in the study of the universality of transverse-momentum-dependent (TMD) fragmentation functions.},
doi = {10.1103/PHYSREVD.83.071503},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 83,
place = {United States},
year = {2011},
month = {4}
}