2021/01/14 by Keiichi Kimura, Kimura, Keiichi, Akira Takamura +1
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Astrophysics and Cosmic Phenomena
paper · pdf · doi:10.48550/arxiv.2101.05613
We derive the neutrino oscillation probabilities including sterile neutrinos by using the Dirac equation. If neutrinos have both the Dirac and the Majorana mass terms, left-handed neutrino νL and right-handed anti-neutrino νRc enter the same multiplet and can transfer each other. Sterile neutrinos have been introduced by hand as the fourth generation neutrino in many papers, however, we can understand sterile neutrinos naturally in the framework of three generations. We also point out that the oscillations into sterile neutrinos strongly suggest the existence of both the Dirac and the Majorana mass terms, and for neutrinos to be the Majorana particles.