  Solar, atmospheric and LSND neutrino oscillation results require a light
sterile neutrino, $\nu_B$, which can exist in the bulk of extra dimensions.
Solar $\nu_e$, confined to the brane, can oscillate in the vacuum to the zero
mode of $\nu_B$ and via successive MSW transitions to Kaluza-Klein states of
$\nu_B$. This new way to fit solar data is provided by both low and
intermediate string scale models. From average rates seen in the three types of
solar experiments, the Super-Kamiokande spectrum is predicted with 73%
probability, but dips characteristic of the 0.06 mm extra dimension should be
seen in the SNO spectrum.

High Energy Physics - Phenomenology