NUCLEON PROPERTIES IN CHIRAL COLOR DIELECTRIC MODEL

The chiral extension of color dielectric model has been used to study the static properties of nucleon. In this calculation we have treated the gluon and the pion fields perturbatively. It is found that the neutron charge rms radius and the pion-nucleon coupling constant are almost insensitive to the parameters used and are in excellent agreement with the experimental values. For better fitting the proton charge rms radius, nucleon magnetic moments and axial coupling constant prefer large quark masses (approximately 100 MeV) and small glueball masses (< 1100 MeV). The strong coupling constant is found to be very sensitive to the quark and glueball masses.