2003/11/13 by Steven D. Bass
Physics and Astronomy · #hep-ph
published as Acta Phys.Polon. B34 (2003) 5893-5926 · 34 pages, Presented at the 43rd Cracow School of Theoretical Physics: Fundamental Interactions, Zakopane, Poland May 30 - June 8, 2003; to appear in Acta Physica Polonica B
arxiv created 2003/11/13 · arxiv updated 2009/12/01
We review the theory and present status of the proton spin problem with emphasis on possible gluonic and sea contributions. We discuss the possibility of a J=1 fixed pole correction to the Ellis-Jaffe sum rule for polarized deep inelastic scattering. Fixed poles in the real part of the forward Compton scattering amplitude have the potential to induce subtraction constant corrections to sum rules for photon nucleon scattering.