Neutrino's non-standard interactions; another EEL under willow?

Here are reported some progress that occurred since No-Ve 08 in the field of non-standard interactions (NSI) of neutrinos. After briefly reviewing theoretical developments, it is given a summary of the two works in which the author was involved. Firstly, it has been formulated a perturbative framework to illuminate the global feature of neutrino oscillations with NSI, aiming at exploring method for determination of the parameter degeneracy prevails with an extended form which involves the NSI elements. Furthermore, a completely new type of degeneracy is shown to exist. The nature of the former degeneracy is analyzed in details in the second work. The work is primarily devoted to analyzed the problem of discriminating the two CP violation, one due to the lepton Kobayashi-Maskawa phase and the other by phase ϕ of the NSI elements. We have shown that the near (3000 km)-far (7000 km) two detector setting in neutrino factory does have the discrimination capability and is sensitivities to CP violation due to NSI to [εeμ] to ≃ several X10-4 in most of the region of δ and εeμ.