## Dynamical model for the gluon distribution function

In this paper, the forms of the gluon distribution function at different Q/sup 2/ are discussed with the aid of the three quark model and the dynamical calculations of QCD (the leading logarithm approximation). The Buras-Gaemers parametrization is improved and the gluon distribution function obtained can be parametrized by the simple parameter form xG(x,Q/sup 2/) = xG/sub 1/(x,Q/sup 2/) +xG/sub 2/(x,Q/sup 2/) = (1+B(s))/sub 2/ (1-x)/sup /(s)) +(1+D(s)) (1-x)/sup D/(s). The form satisfies the QCD evolution equation and does not contradict evidently the existing experimental data. The properties of the gluon content in a nucleon are analyzed on this basis.more »