2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/214739It is shown that the CKMT model for the nucleon structure function F2, taken as the initial condition for the NLO evolution equations in perturbative QCD, provides a good description of the HERA data when presented in the form of the logarithmic slopes of F2 vs x and Q2 (Caldwell-plot), in the whole available kinematic ranges. Also the results obtained for the behavior of the gluon component of a nucleon are presented.16 pages, 10 figuresHigh Energy Physics - Phenomenologytext