Supernova prompt neutronization neutrinos and neutrino magnetic moments
Abstract
It is shown that the combined action of spin-flavor conversions of supernova neutrinos due to the interactions of their Majorana-type transition magnetic moments with the supernova magnetic fields and flavor conversions due to the mass mixing can lead to the transformation of e born in the neutronization process into their antiparticles e. Such an effect would have a clear experimental signature and its observation would be a smoking gun evidence for the neutrino transition magnetic moments. It would also signify the leptonic mixing parameter |Ue3| in excess of 10-2.
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