Intrinsic glue distribution at very small
- 1 May 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 55 (9), 5414-5428
- https://doi.org/10.1103/physrevd.55.5414
Abstract
We compute the distribution functions for gluons at very small 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 to the description of hadrons at yet smaller values of . 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.
Keywords
This publication has 12 references indexed in Scilit:
- Lattice computations of small-xparton distributions in a model of parton densities in very large nucleiPhysical Review D, 1996
- Non-Abelian Weizsäcker-Williams field and a two-dimensional effective color charge density for a very large nucleusPhysical Review D, 1996
- Gluon production at high transverse momentum in the McLerran-Venugopalan model of nuclear structure functionsPhysical Review D, 1995
- Gluon propagator in non-Abelian Weizsäcker-Williams fieldsPhysical Review D, 1995
- Computing quark and gluon distribution functions for very large nucleiPhysical Review D, 1994
- Dynamics of parton cascades in highly relativistic nuclear collisionsNuclear Physics B, 1992
- Small-x behaviour of initial state radiation in perturbative QCDNuclear Physics B, 1990
- Virtual pair creation in a strong Bremsstrahlung field: A QED model for parton saturationNuclear Physics B, 1988
- Semihard processes in QCDPhysics Reports, 1983
- Highly relativistic nucleus-nucleus collisions: The central rapidity regionPhysical Review D, 1983