Beta decay is a type of nuclear decay that occurs in 2 types: β- and β+. In β- decay, weak nuclear force causes the neutron to decompose into the following particles: n0 is converted to a proton, an electron and one antineutrino. In β+, protons convert to neutrons, creating a positron and a neutrino.
But the mass and nature of neutrino is still unknown. Neutrino oscillation experiments have finally provided the incontrovertible evidence that neutrinos mix and have finite masses. These results represent the strongest demonstration that the Standard Model of electroweak interactions is incomplete and that new Physics beyond it must exist.
In the Saleh Theory, a photon has a constant rest-mass and the electrons, protons and neutrons are made of it. The proton is made up of millions of photons that are united so the proton has a compacted structure. Electrons are also made up of photons, but it is a hollow sphere without any core. Saleh Theory states that when a proton is placed at the center of a spherical electron, a neutron is made. In this paper, we are going to explain the fundamental reason of beta decay based on the structure of electron, proton and neutron. We have demonstrated what exactly happen in Beta decay.