Gluon Spin’s Contribution To The Nucleon Spin

This thesis analyzes the contribution of gluon polarization to nucleon spin. Firstly, through the analyses of deep inelastic scattering amplitude, introduce the nucleon structure function in the scaling conditions. And the use of dispersion relations and the operator product expansion to deduce the polarization structure function’s sum rule. Next, under the light cone gauge and the infinite momentum frame, do the research of the gluon spin operator, and a detailed calculation of the one-loop correction from the matrix elements of the gluon spin at finite Pz and in the IMF limit, and the matching function is obtained, provides a new approach to calculate the gluon polarization.