Evolution of an Idea

Martin Tanui's proposal

E=mc^2k

E = Energy

m= Mass

C= speed of light [299 792 458 m / s]

K= acceleration [the acceleration of the neutrino]

Pauli's proposal

The neutrino[nb 1] was first postulated in 1930 by Wolfgang Pauli to preserve the conservation of energy, conservation of momentum, and conservation of angular momentum in beta decay. This was done by adding an undetected particle that Pauli termed a "neutron" to the proton, and electron already known to be products of beta decay. Some, such as Niels Bohr were opposed to this interpretation of beta decay and was ready to accept that energy, momentum and angular momentum were not conserved quantities.[4]

He theorized that an undetected particle was carrying away the observed difference between the energy, momentum, and angular momentum of the initial and final particles.
Pauli originally named his proposed light particle a neutron. When James Chadwick discovered a much more massive nuclear particle in 1932 and also named it a neutron, this left the two particles with the same name. Enrico Fermi, who developed the theory of beta decay, coined the term neutrino in 1934 as a way to resolve the confusion. It is the Italian equivalent of "little neutral one"