Nucleon charge and magnetisation distributions: flavour separation and zeroes

A symmetry-preserving truncation of the quantum field equations describing hadron properties is used to deliver parameter-free predictions for all nucleon elastic electromagnetic form factors and their flavour separation to large values of momentum transfer, Q^2. The proton electric form factor, G_E^p, possesses a zero, whereas that of the neutron, G_E^n, does not. The difference owes to the behaviour of the Pauli form factor of the proton's singly-represented valence d-quark. Consequently, G_E^n>G_E^p on a material large-Q^2 domain. These predictions can be tested in modern experiments.