Gluon distributions and mass decompositions of the pion and kaon

We present pion and kaon gluon distribution functions at small-x and large-x regions, where the gluon distributions of pion and kaon are compared with the results of lattice QCD and continuum Schwinger function methods. Whether in the small-x region or the large-x region, our gluon distribution of pion is consistent with the results of lattice QCD and continuum Schwinger function methods. In addition, the first four moments of gluon distributions of pion and kaon at different Q^2 scales are calculated. Furthermore, we present the mass decompositions of pion and kaon with the dynamical parton distribution functions calculated from the DGLAP equation with parton-parton recombination corrections. The mass structures for pion and kaon are totally different from that of the proton.