Non-Standard Interactions and Neutrino Oscillations

The impact of new physics in the form of general four-fermion interactions on neutrino oscillation signals at future neutrino factories is investigated. We develop a field theoretic description of the overall oscillation process including a source and detector. This formalism is found to be ideal for incorporating interactions at the source and detector with different chiral structures. A study of the ν_μ → ν_τ oscillation channel is undertaken for a medium baseline. It is found that neutrino factories are ideal for establishing whether a non-standard interaction is diagonal in the standard weak basis.