Abstract

In the 1950?s decade the physicist Wu and collaborators discovered that in the decay 27Co60.28Ni60+e+.? the emission of electrons has a preferential direction. Therefore, she discovered that in the beta decay there is not a conservation of the parity. Herein we analyze Wu?s experiment. In addition, we will show that its results constitute another strong evidence that corroborates the hypothesis of axial distribution of nucleons about the z-axis into the nuclei.