Beta decay can involve the emission of either this non-neutrino
The Dirac equation produced a model of this particle consistent with relativity theory. It shares a charge and spin with two other particles, the muon and the tau. Beta decay can involve the emission of either this non-neutrino [*] fermion or its antiparticle, and it can be found in locations labeled s, p, d, and f. Its name comes from the Greek word for amber, and a beam of these particles is shot through a thin specimen in one type of microscopy. For 10 points, name this antiparticle of the positron, a low-mass, negatively-charged subatomic particle.
The Dirac equation produced a model of this particle consistent with relativity theory.
{electron} [accept {elementary fermions} or {spin}-{one}-{half particles} before “{muon}” is read]