Instanton contribution to the quark distribution functions

1995/11/12 by N. I. Kochelev, Kochelev, N. I.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.hep-ph/9511299

16 pages, 6 figures; Talk presented at 2nd Meeting on Possible Measurements of Singly Polarized pp and pn Collisions at HERA, DESY-Zeithen, August 31-September 1, 1995

arxiv created 1995/11/12 · openalex publication_date 1995/11/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The instanton contribution to the quark distribution functions in the nucleon is estimated. It is shown, that taking into account the instanton induced interaction between quarks allows to explain the anomalous violation of the Ellis-Jaffe and Gottfried sum rules. The spin-dependent structure functions g₁^p(x), g₁ⁿ(x), g₁^d(x) are calculated in the framework of the instanton model of the QCD vacuum.

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