Considering the model in which the effective interaction between any two quarks of a baryon can be approximately described by a simple harmonic potential, and making use of the expression of the energy obtained in Cartesian coordinates for the above mentioned model, we find a general expression for the radii of baryons. We then apply the expression to some baryons and find very consistent values for the radii of baryons and an experimental confirmation for the ground state of Ξ−.
[Article published in March, 2013]