Matter effects for `just so' oscillations

Details Matter effects for `just so' oscillations Matter effects for `just so' oscillations

2000-04-21

arxiv.org/abs/hep-ph/0004204v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages including one figure

Scientific paper

We study the effect of the matter term on the evolution of the solar neutrinos when the neutrino parameters are those of the `just-so' case. The extreme non-adiabatic effects at the edge of the sun reduce the expression for the survival probability in the just-so case to that of the vacuum case. This conclusion is independent of the width of the extreme non-adiabatic region, which is a function of the density profile of the sun beyond $r > 0.9 R_s$. However, in its propagation, neutrino encounters regions of moderate (non-extreme) non-adiabticity. Neutrino traversal through these regions give corrections to the survival probability which are profile dependent.

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