Low-energy Anti-neutrinos from the Sun

Details Low-energy Anti-neutrinos from the Sun Low-energy Anti-neutrinos from the Sun

1997-11-13

arxiv.org/abs/hep-ph/9711316v2

Phys. Lett. B423:118-125,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 14 pages, 3 PS figures included, 3 references added

Scientific paper

10.1016/S0370-2693(98)00122-1

We consider the sensitivity of future neutrino experiments in the low energy region, such as BOREXINO or HELLAZ, to a solar electron antineutrino signal. We show that, if neutrino conversions within the Sun result in partial polarization of initial solar neutrino fluxes, then a new opportunity arises to observe the electron antineutrinos and thus to probe the Majorana nature of the neutrinos. This is achieved by comparing the slopes of the energy dependence of the differential neutrino electron scattering cross section for different neutrino conversion scenarios. We also show how the \nu_e -> \bar{\nu}_e conversions may take place for low energy solar neutrinos while being unobservable at the Kamiokande and Super-Kamiokande experiments.

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