In previous paper, we showed that the elementary particles mass spectrum can be computed from theory using a resonance equation. The predicted H 0 mass agrees with the latest CERN publications. As a result, the H 0 acquires its mass exactly in the same geometry as the Z 0 and the W ± ; it is not a "purely scalar boson" and then quadratic divergences are inexistent. In this paper, we find an underlying structure of the field with 19 pure states, where 36 quark states (including color) and 3 or 6 neutrinos states are mixtures, and we show that the CKM and PMNS matrices elements come from the equation and the field structure. We conclude that the field is natural since over the 23 SM parameters, at least 19 are fully constrained by the field structure.