A numerical estimate of the small-k$_{T}$ region in the BFKL pomeron

A computer study is performed to estimate the influence of the small-k_T region in the BFKL evolution equation. We consider the small-x region of the deep inelastic structure function F_2 and show that the magnitude of the small-k_T region depends on Q^2 and x_B. We suggest that the width of the \log k_T^2-distribution in the final state may serve as an additional footprint of BFKL dynamics. For diffractive dissociation it is shown that the contribution of the infrared region is large - even for large Q^2. This contribution becomes smaller only if restrictions on the final state are imposed