Previously defined spin-dependent quark densities that are matrix elements of specific density operators in proton states of definite spin-polarization generally have an infinite variety of nonspherical shapes. The present application is concerned with both charge and matter densities. We show that the Gross and Agbakpe model nucleon harbors an interesting variety of nonspherical shapes.

• Received 14 March 2006

DOI:https://doi.org/10.1103/PhysRevC.73.065203