Firstly, what are Majorana fermions?
As wikipedia says:
Quote A Majorana fermion, also referred to as a Majorana particle, is a fermion that is its own antiparticle. They were hypothesised by Ettore Majorana in 1937. The term is sometimes used in opposition to a Dirac fermion, which describes fermions that are not their own antiparticles.
In the Standard Model of particle physics, the term "Majorana fermion" is often used in contrast to the Dirac fermion, which refers to fermions which are not their own antiparticle.
Now, for almost all of the fermions of the standard model, we have determined that their nature aligns with that of a Dirac fermion.
