We present a new analysis of non-universal and flavor changing non-standard neutrino interactions (NSI) in \nu_e e or \bar{\nu}_e e scattering. Our global analysis of these process includes all relevant experiments, such as the most recent MUNU measurement from reactor neutrinos, both in the context of the Standard Model as well as extensions where NSI are present. We also compare our constraints on non-universal and flavor changing NSI with results from previous analyses. We stress the importance of combining neutrino and anti-neutrino data in the resulting constraints on electroweak paramaters, and the important role that future low energy solar neutrino experiments can play in improving existing sensitivities.
@article{arxiv.hep-ph/0512195,
title = {Constraining non-standard interactions in nu_e e or bar{nu}_e e scattering},
author = {J. Barranco and O. G. Miranda and C. A. Moura and J. W. F. Valle},
journal= {arXiv preprint arXiv:hep-ph/0512195},
year = {2009}
}
Comments
15 pages. Discussion and figures improved. Typos corrected. Final version to appear in Phys. Rev. D