Final state interactions & the Sivers function

Leonard Gamberg, Marc Schlegel

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

8 Scopus citations

Abstract

The non-vanishing of naive T-odd parton distributions function can be explained by the existence of the gauge link which emerges from the factorized description of the deep inelastic scattering cross section into perturbatively calculable and non-perturbative factors. This path ordered exponential describes initial / final-state interactions of the active parton due to soft gluon exchanges with the target remnants. Although these interactions are non-perturbative, studies of final state interactions have been approximated by perturbative one-gluon exchange in Abelian models. We include higher-order gluonic contributions from the gauge link by applying non-perturbative eikonal methods, incorporating color degrees of freedom in a calculation of the Sivers function. In this context we study the effects of color by considering the FSIs with with Abelian and non-Abelian gluon interactions. We confirm the large Nc QCD scaling behavior of Sivers functions and further uncover the deviations for finite Nc. Within this framework of FSIs we perform a quantitative check of approximate relations between T-odd TMDs and GPD which goes beyond the discussion of overall signs.

Original languageEnglish (US)
Title of host publication12th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2010
Pages309-313
Number of pages5
DOIs
StatePublished - Nov 10 2011
Event12th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2010 - Williamsburg, VA, United States
Duration: May 31 2010Jun 4 2010

Publication series

NameAIP Conference Proceedings
Volume1374
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other12th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2010
CountryUnited States
CityWilliamsburg, VA
Period5/31/106/4/10

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Final state interactions & the Sivers function'. Together they form a unique fingerprint.

  • Cite this

    Gamberg, L., & Schlegel, M. (2011). Final state interactions & the Sivers function. In 12th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon, MENU 2010 (pp. 309-313). (AIP Conference Proceedings; Vol. 1374). https://doi.org/10.1063/1.3647149