Intrinsic glue distribution at very small x
Abstract
We compute the distribution functions for gluons at very small x and not too large values of transverse momenta. We extend the McLerran-Venugopalan model by using renormalization group methods to integrate out effects due to those gluons which generate an effective classical charge density for Weizsäcker-Williams fields. We argue that this model can be extended from the description of nuclei at small x to the description of hadrons at yet smaller values of x. This generates a Lipatov-like enhancement for the intrinsic gluon distribution function and a nontrivial transverse momentum dependence as well. We estimate the transverse momentum dependence for the distribution functions, and show how the issue of unitarity is resolved in lepton-nucleus interactions.
- Publication:
-
Physical Review D
- Pub Date:
- May 1997
- DOI:
- 10.1103/PhysRevD.55.5414
- arXiv:
- arXiv:hep-ph/9606337
- Bibcode:
- 1997PhRvD..55.5414J
- Keywords:
-
- 12.38.Bx;
- 12.38.Mh;
- 24.85.+p;
- 25.75.Dw;
- Perturbative calculations;
- Quark-gluon plasma;
- Quarks gluons and QCD in nuclei and nuclear processes;
- Particle and resonance production;
- High Energy Physics - Phenomenology
- E-Print:
- 31 pages, Latex2e, 5 postecript figure included, using epsf, latexsym, amssymb and fancyheadings