Chirality preserving neutrino oscillations in an external magnetic field
Dec, 1995Citations per year
Abstract:
Neutrinos propagating in matter acquire an effective electromagnetic vertex induced by their weak interactions with the charged particles in the background. In the presence of an external magnetic field the induced vertex affects the flavor transformations of mixed neutrinos in a way that, in contrast to the oscillations driven by an intrinsic magnetic moment interaction, preserve chirality. We derive the evolution equation for this case and discuss some of the physical consequences in environments such as a supernova. For small values of the square mass difference the resonance condition becomes independent of the vacuum parameters, and it is the same for neutrinos and antineutrinos.Note:
- 10 pages, latex, no figures
- neutrino: oscillation
- magnetic field: external field
- vertex: electromagnetic
- transformation: flavor
- neutrino: interference
- gas: model
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