It can be shown that composite particles are precisely formed,
using only the basic electron and neutrinos, with a precision
that provides credibility for the model's approach.
The beauty, of these models, is that one uses only well known
particles (electrons, positrons and neutrinos) and ordinary EM
forces to create good models for the composites. Occam's razor.
For example, the proton is modeled from a positron and nested
neutrinos. The vectorial combination of electron or positron and
neutrino produces alternating polarity layers that store
electrical potential energy. The potential energy mass ratio, plus the
scaled structure mass ratio, gives the mass ratio of the proton, to
within 3.24 ppm of the CODATA recommended value.
Using the proton model and postulating unformed pairs at the
first two layers of the proton immediately gives the known neutron
decay products (electron and neutrino) and the mass of the
neutron to within 400 parts per billion of the CODATA.
It should be pointed out that the proton and neutron's CODATA
quoted masses were obtained experimentally, so the model's
predictions may be more correct, than shown.
For a outline of the models, and/or to order the book (from
the web page) see the URL:
Regards: Tom.