1997/01/06 by Yuri V. Kovchegov · 7 citations
Engineering · Mathematics · Neuroscience · Physics and Astronomy · #Abelian group #Biology #Field (mathematics) #High-Energy Particle Collisions Research #Mathematics #Neuroscience #Nucleus #Physics #Pure mathematics #Quantum Chromodynamics and Particle Interactions #Superconducting Materials and Applications #hep-ph
paper · pdf · doi:10.1103/physrevd.55.5445
published as Phys. Rev. D 55, 5445 (1997) · 13 pages, REVTeX, 9 figures
arxiv created 1997/01/06 · openalex publication_date 1997/05/01 · arxiv updated 2016/08/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the McLerran-Venugopalan model for calculation of the small-x part of the gluon distribution function for a very large ultrarelativistic nucleus at weak coupling. We construct the Feynman diagrams which correspond to the classical Weizs"acker-Williams field found previously [Yu. V. Kovchegov, Phys. Rev. D 54, 5463 (1996)] as a solution of the classical equations of motion for the gluon field in the light-cone gauge. Analyzing these diagrams we obtain a limit for the McLerran-Venugopalan model. We show that as long as this limit is not violated a classical field can be used for the calculation of scattering amplitudes.