The Logarithmic Derivative of the F_{2} Structure Function and Saturation

Abstract

We show that when screening corrections are included $\frac{\partial F_2(x,Q^2)}{\partial ln(Q^2/Q_0^2)}$ is consistent with the behaviour that one expects in pQCD. Screening corrections explain the enigma of the Caldwell plot. Saturation has not been reached at present HERA energies.

6 pages, 4 figures, talk at XXIX Int. Symp. on Multiparticle Dynamics (ISMD99), 9-13 August 1999, Providence R.I., USA