![]() ![]() Valle, Resonant oscillations of massless neutrinos in matter, Phys. Wolfenstein, Neutrino oscillations in matter, Phys. Weinberg, Baryon and lepton nonconserving processes, Phys. Maltoni, Phenomenology with massive neutrinos, Phys. ![]() Pontecorvo, Neutrino astronomy and lepton charge, Phys. Pontecorvo, Neutrino experiments and the problem of conservation of leptonic charge, Sov. As a result of the study we provide explicit constraints on the effective couplings which parametrize the non-standard Earth matter potential relevant for long-baseline experiments.ī. Generically we find that the conclusions are robust for a broad spectrum of up-to-down strengths, and we identify and quantify the exceptional cases related to couplings whose effect in neutrino propagation in the Earth or in the Sun is severely suppressed. We study the dependence of the allowed ranges of non-standard interaction coefficients, the status of the LMA-D solution, and the determination of the oscillation parameters on the relative strength of the non-standard couplings to up and down quarks. We consider general neutral current neutrino interactions with quarks whose lepton-flavor structure is independent of the quark type. We quantify our present knowledge of the size and flavor structure of non-standard neutrino interactions which affect the matter background in the evolution of solar, atmospheric, reactor and long-baseline accelerator neutrinos as determined by a global analysis of oscillation data - both alone and in combination with the results on coherent neutrino-nucleus scattering from the COHERENT experiment. ![]()
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