Probing Quark-Gluon Interactions with Transverse Polarized Scattering

2008/12/31 by K. Slifer, O. A. Rondon, O. Rondon +85
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.1103/physrevlett.105.101601

published as Phys.Rev.Lett.105:101601,2010 · formerly "Nachtmann Moments of the Proton and Deuteron Spin Structure Functions"

arxiv created 2010/08/05 · openalex publication_date 2010/09/02 · arxiv updated 2014/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We have extracted QCD matrix elements from our data on doubly polarized inelastic scattering of electrons on nuclei. We find the higher twist matrix element d˜2, which arises strictly from quark-gluon interactions, to be unambiguously nonzero. The data also reveal an isospin dependence of higher twist effects if we assume that the Burkhardt-Cottingham sum rule is valid. The fundamental Bjorken sum rule obtained from the a0 matrix element is satisfied at our low momentum transfer.

Citations

• Deuteron spin structure functions in the resonance and deep inelastic scattering regions
• Precision measurement of the proton and deuteron spin structure functions g2 and asymmetries A2
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