Small x Behavior and Parton Saturation: A QCD Model
Oct 2, 198923 pages
Published in:
- Nucl.Phys.B 335 (1990) 115-137
- Published: 1990
Report number:
- CU-TP-441a
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Abstract: (Elsevier)
A QCD model is defined to study questions of quark and gluon parton saturation at small x -values. The model uses a source consisting of a nucleus of heavy quarkonium bound states, states well understood in QCD. Deeply inelastic scattering, using the currents j(x) = − 1 4 F μν a F μν a and j μ (x) = ψ γ μ ψ , is evaluated in Born and one-loop approximation in order to extract quark and gluon distributions. Quark distributions are observed to saturate while gluon distributions have a saturating and a nonsaturating component.- lepton hadron: deep inelastic scattering
- deep inelastic scattering: lepton hadron
- quarkonium
- quantum chromodynamics
- quark: momentum spectrum
- gluon: momentum spectrum
- perturbation theory: higher-order
- model: parton
- Feynman graph
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