2001/02/04 by Steven D. Bass · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.65.074025
published as Phys.Rev. D65 (2002) 074025 · 15 pages
arxiv created 2001/02/04 · openalex publication_date 2002/03/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Renormalization induces anomalous contributions in light-cone correlation functions. We discuss the role of the axial anomaly and gluon topology in nonforward parton distributions noting that nonforward matrix elements of the gluonic Chern-Simons current K_\ensuremathμ are not gauge invariant even in perturbation theory. The axial anomaly means that one has to be careful how to interpret information from hard exclusive reactions about the orbital angular momentum carried by the proton's internal constituents.