Constraining non-standard interactions in nu_e e or bar{nu}_e e scattering

Abstract

We present a new analysis of non-universal and flavor changing non-standard neutrino interactions (NSI) in ν_e e or \barν_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.

15 pages. Discussion and figures improved. Typos corrected. Final version to appear in Phys. Rev. D

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• Status of global fits to neutrino oscillations
• Atmospheric neutrinos as probes of neutrino-matter interactions
• Precision spectroscopy with reactor anti-neutrinos
• Enhanced solar anti-neutrino flux in random magnetic fields

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