  We have analyzed the electron anti-neutrino scattering off electrons and the
electron anti-neutrino-nuclei coherent scattering in order to obtain
constraints on tensorial couplings. We have studied the formalism of
non-standard interactions (NSI), as well as the case of Unparticle physics. For
our analysis we have focused on the recent TEXONO collaboration results and we
have obtained current constraints to possible electron anti-neutrino-electron
tensorial couplings in both new physics formalisms. The possibility of
measuring for the first time electron anti-neutrino-nucleus coherent scattering
and its potential to further constrain electron anti-neutrino-quark tensorial
couplings is also discussed.
