Atmospheric Neutrino Oscillations and New Physics

By M. Gonzalez-Garcia, M. Maltoni. 2004

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We study the robustness of the determination of the neutrino masses and mixing from the analysis of atmospheric and K2K data under the presence of different forms of phenomenologically allowed new physics in the n m ‐n t sector. We focus on vector and tensor-like new physics interactions which allow us to treat, in a model independent way, effects due to the violation of the equivalence principle, violations of the Lorentz invariance both CPT conserving and CPT violating, non-universal couplings to a torsion field and non-standard neutrino interactions with matter. We perform a global analysis of the full atmospheric data from SKI together with long baseline K2K data in the presence of n m!n t transitions driven by neutrino masses and mixing together with sub-dominant effects due to these forms of new physics. We show that within the present degree of experimental precision, the extracted values of masses and mixing are robust under those effects and we derive the upper bounds on the possible strength of these new interactions in the n m ‐n t sector.

Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/7f5cd413a420c4266a419dfbc08abb19601242ec

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Citations in the corpus

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Invited review: Physics potential of the ICAL detector at the India-based Neutrino Observatory (INO) (2015, methodology): “ic neutrino uxes and then with the ux spectrum shifted according to (E) = 0(E) E E 0 ’ 0(E) 1 + ln E E 0 ; (5.10) where E 0 = 2 GeV and is the 1˙systematic error which we have taken as 5% [123]. The dierence between the predicted events rates for the two cases is then included in the statistical”
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