In most of the proposals for new physics beyond the standard model, neutrinos
have new interactions and some of them have phenomenological consequences that,
although at present they may seem purely academic, probably will have to be
taken into account in the future neutrino experiments. Here we show that new
interactions may imply the misidentification of the flavour of the neutrinos,
and the experimental ability to distinguish neutrinos from antineutrinos.Comment: 18 pages; New discussions and references adde