They were first proposed by Wolfgang Pauli as a method of preserving conservation of mass and momentum in beta decay, and the Super-Kamiokande device detects them.
Kusenko and Segre demonstrated that these particles could explain pulsar kicks. Taking the determinant of a matrix with elements zero, Dirac mass, Dirac mass, Majorana mass gives the mass of an as yet undiscovered form of this particle as the larger root by the "seesaw" mechanism. Warm dark matter may be composed of that "sterile" type of this particle, and the PMNS matrix predicts their flavor oscillations. They were first proposed by Wolfgang Pauli as a method of preserving conservation of mass and momentum in beta decay, and the Super-Kamiokande device detects them. For 10 points, name these leptons with tau, muon, and electron flavors.
Kusenko and Segre demonstrated that these particles could explain pulsar kicks.
{neutrino}