A novel method to look for neutrino oscillations is proposed based on the elastic scattering process $\bar{ \nu}_{ i} e^{ -}\rightarrow \bar{ \nu}_{ i} e^{ -}$, taking advantage of the dynamical zero present in the differential cross section for $\bar{ \nu}_{ e} e^{ -}\rightarrow \bar{ \nu}_{ e} e^{ -}$. An effective tunable experiment between the "appearance" and "disappearance" limits is made possible. Prospects to exclude the allowed region for atmospheric neutrino oscillations are given.
Categories: hep-ph