: Astronomie: Majorana particle

high-energy astrophysics > particle astrophysics > elementary particle > fermion > Majorana particle

Majorana particle

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. With the exception of neutrinos, all of the Standard Model fermions are known to behave as Dirac fermions at low energy (lower than the electroweak symmetry breaking temperature), and none are Majorana fermions. The nature of the neutrinos is not settled – they may turn out to be either Dirac or Majorana fermions. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Majorana_fermion)

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