Abstract
We investigate effects of nonzero Dirac and Majorana -violating phases on neutrino-antineutrino oscillations in a magnetic field of astrophysical environments. It is shown that in the presence of strong magnetic fields and dense matter, nonzero phases can induce new resonances in the oscillations channels , , and . We also consider all other possible oscillation channels with and in the initial state. The resonances can potentially lead to significant phenomena in neutrino oscillations accessible for observation in experiments. In particular, we show that neutrino-antineutrino oscillations combined with Majorana-type violation can affect the ratio for neutrinos coming from the supernovae explosion. This effect is more prominent for the normal neutrino mass ordering. The detection of supernovae neutrino fluxes in the future experiments, such as JUNO, DUNE, and Hyper-Kamiokande, can give an insight into the nature of violation and, consequently, provides a tool for distinguishing the Dirac or Majorana nature of neutrinos.
2 More- Received 14 February 2021
- Accepted 18 May 2021
DOI:https://doi.org/10.1103/PhysRevD.103.115027
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society