Pontecorvo neutrino-antineutrino oscillations: theory and experimental limits

Details Pontecorvo neutrino-antineutrino oscillations: theory and experimental limits Pontecorvo neutrino-antineutrino oscillations: theory and experimental limits

1997-05-19

arxiv.org/abs/hep-ph/9705351v1

Mod.Phys.Lett.A12:1829-1838,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, Latex2e

Scientific paper

10.1142/S0217732397001862

We study Pontecorvo neutrino-antineutrino oscillations both in vacuum and in matter within a field theoretic approach, showing that this phenomenon can occur only if neutrinos have a Dirac-Majorana mass term. We find that matter effects suppress these oscillations and cannot explain the solar neutrino problem. On the contrary, a vacuum neutrino-antineutrino oscillations solution to this problem exists. We analyze this solution and available data from laboratory experiments giving stringent limits on $\nu_e$ and $\nu_{\mu}$ Majorana masses.

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