Valence quark distribution functions of pion and kaon in the modified chiral quark model

Abstract

We investigate the structure of pion and kaon based on the modified chiral quark model (χQM). To this end, we calculate the valence quark distribution functions of pion and kaon using the modified χQM in which the bare quarks inside these mesons are dressed by the clouds of Goldstone (GS) bosons and gluons. In order to compute the valence distributions of the light mesons using the modified χQM, the bare quark distribution functions of these mesons are needed. We apply the bare distributions which have been obtained via a phenomenological approach. We compare the results of our theoretical model for the valence distributions of the light mesons with those of some parametrization models and also the available experimental data.