New approach in the extracting of parton densities, based on the parameterized solution of inverse Mellin technique

Abstract

We analysis the sea quark densities, based on the constituent quark model. To perform a direct fit with available experimental data, the parameterized Inverse Mellin technique is used. The calculation is extended to the NLO approximation for the singlet and non-singlet cases in DIS phenomena. We employ the approach of complete RG improvement(CORGI) where one is forced to identify and resum to all-orders RG-predictable ultraviolet logarithm terms which truly build the Q-dependence of QCD observable. The results are compared with the standard approach of perturbative QCD in the ${\bar{MS}}$ scheme with a physical choice of scale. The results in the CORGI approach indicate a better agreement to the data.