Around the heavy neutrino

1993/01/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

• Fisika

In the last five years, in laboratories dedicated to the study of the elementary particles of matter, a ghost is circling by neutrino and not. Neutrina is one of the most abundant particles of matter in the Universe and one of its characteristics is the ease of crossing walls or solids. You can move from side to side without any obstacles, for example.

Physicists claim that this strange particle has no mass or almost no mass. Physicist John Simpson, for his part, claimed that neutrinos had a mass of 17,000 volts (a unit used to represent the mass of particles), and from there physicists are dedicated to experiencing Simpson. Some have found heavy neutrino (with mass) and others have not.

However, in France, a group of researchers from the Laue-Langevin Institute in Grenoble has conducted the most accurate essay since the beginning of the debate, based on the disintegration of the lutetium element 177. The conclusion is clear: There is a probability of 80% to find heavy neutrino.