Non-Standard Neutrino Interactions and Neutrino Oscillation Experiments
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In analyzing neutrino oscillation experiments it is often assumed that while new physics contributes to neutrino masses, neutrino interactions are given by the Standard Model. We develop a formalism to study new physics effects in neutrino interactions using oscillation experiments. We argue that the notion of branching ratio is not appropriate in this case. We show that a neutrino appearance experiment with sensitivity to oscillation probability $P_{ij}^{exp}$ can detect new physics in neutrino interactions if its strength $G_N$ satisfies $(G_N/G_F)^2 \sim P_{ij}^{exp}$. Using our formalism we show how current experiments on neutrino oscillation give bounds on the new interactions in various new physics scenarios.
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Cited by 2 Pith papers
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Probing Scalar Non-Standard Neutrino Interactions using High-Energy Astrophysical Neutrinos
IceCube astrophysical neutrino data is analyzed for flavor ratios and spectral shapes to constrain scalar non-standard neutrino interactions via induced pseudo-Dirac behavior.
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Astrophysical bounds on the high-energy evolution of neutrino mixing
High-energy astrophysical neutrinos can constrain the running of neutrino mixing parameters with energy, with future multi-detector setups forecast to set strong bounds despite astrophysical uncertainties.
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