Abstract
Leptonic CP violation is one of the most important topics in neutrino physics. CP violation in the neutrino sector is strongly related to the nature of neutrinos: whether they are Dirac or Majorana particles. In [1] we have shown that for Majorana neutrinos appearance of nonzero Majorana CP-violating phases combined with strong magnetic field during supernova core-collapse can induce new resonances in neutrino oscillations, for example in \({{\nu }_{{\text{e}}}} \to {{\bar {\nu }}_{\tau }}\) channel. In this paper we further study new resonances in Majorana neutrino oscillations, in particular energy dependence of amplitudes of resonant oscillations. Our findings suggest a potential astrophysical setup for studying the nature of neutrino masses and leptonic CP violation and may be important for future neutrino experiments, such as JUNO, Hyper-Kamiokande and DUNE.
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Funding
The work is supported by the Russian Science Foundation under grant no. 22-22-00384. The work of A.P. has been supported by the Foundation for the Advancement of Theoretical Physics and Mathematics “BASIS” under Grant no. 21-2-2-26-1 and by the National Center for Physics and Mathematics (Project “Study of coherent elastic neutrino-atom and -nucleus scattering and neutrino electromagnetic properties using a high-intensity tritium neutrino source”).
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Popov, A.R., Studenikin, A.I. Oscillations of Majorana Neutrinos in Supernova and CP Vviolation. Phys. Part. Nuclei Lett. 21, 430–433 (2024). https://doi.org/10.1134/S1547477124700407
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DOI: https://doi.org/10.1134/S1547477124700407