Quantum structure of the nonAbelian Weizsacker-Williams field for a very large nucleus
Jan, 199713 pages
Published in:
- Phys.Rev.D 55 (1997) 5445-5455
e-Print:
- hep-ph/9701229 [hep-ph]
Report number:
- CU-TP-807
Citations per year
Abstract:
We consider the McLerran-Venugopalan model for calculation of the small- 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\"{a}cker-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 calculation of scattering amplitudes.Note:
- 13 pages, REVTeX, 9 figures
- 24.85.+p
- 12.38.Aw
- 12.38.Bx
- nucleus: relativistic
- equivalent photon approximation: nonabelian
- gluon: momentum spectrum
- small-x
- Feynman graph: higher-order
- light cone gauge
- correlation function
References(12)
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