New Resonances of Supernova Neutrinos in Twisting Magnetic Fields

Abstract

We investigate the effect of resonant spin conversion of the neutrinos induced by the geometrical phase in a twisting magnetic field. We find that the geometrical phase originating from the rotation of the transverse magnetic field along the neutrino trajectory can trigger a new resonant spin conversion of Dirac neutrinos inside the supernova, even if there were no such transitions in the fixed-direction field case. We have shown that even though resonant spin conversion is too weak to affect solar neutrinos, it could have a remarkable consequence on supernova neutronization bursts where very intense magnetic fields are quite likely. We demonstrate how the flavor composition at Earth can be used as a probe to establish the presence of non-negligible magnetic moments, potentially down to $10^{-15}{\mu }_B$ in upcoming neutrino experiments like the Deep Underground Neutrino Experiment (DUNE), and the Hyper-Kamiokande (HK). Possible implications are analyzed.

arXiv comment5 pages + references, 3 figures, version to appear in Phys. Rev. Lett

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Cited by in corpus (7)

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• Flavor composition of supernova neutrinos
• Resonant Spin-Flavor Precession of Sterile Neutrinos
• Correlating neutrino magnetic moment and scalar triplet dark matter to enlighten XENONnT bounds in a Type-II model
• Matter- and magnetically-driven flavor conversion of neutrinos in magnetorotational collapses