Intrinsic glue distribution at very small x

Journal Article · Thu May 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.5414· OSTI ID:562426

Jalilian-Marian, J; Kovner, A; McLerran, L; Weigert, H ^[1]

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1. Physics Department, University of Minnesota, 116 Church Street S.E., Minneapolis, Minnesota 55455 (United States)

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 Weizs{umlt a}cker-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. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 562426
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BAG MODEL
CHARGE DENSITY
DISTRIBUTION FUNCTIONS
GLUONS
HADRONS
LEPTON REACTIONS
QUANTUM CHROMODYNAMICS
RENORMALIZATION
TRANSVERSE MOMENTUM
UNITARITY