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On the Interpretation of the Atmospheric Neutrino Data in Terms of Flavor Changing Neutrino Interactions

N. Fornengo·M. C. Gonzalez-Garcia·J. W. F. Valle
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Abstract

Flavour changing (FC) neutrino-matter interactions have been proposed as a solution to the atmospheric neutrino anomaly. Here we perform the analysis of the full set of the recent 52 kTy Super-Kamiokande atmospheric neutrino data, including the zenith angle distribution of the contained events as well as the higher energy upward-going stopping and through-going muon events. Our results show that the FC mechanism can describe the full data sample with a chi^2_{min}=44/(33 d.o.f) which is acceptable at the 90% confidence level. The combined analysis confines the amount of FC to be either close to maximal or to the level of about (10-50)%.

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N. Fornengo, M. C. Gonzalez-Garcia, J. W. F. Valle. 1999-11-05. On the Interpretation of the Atmospheric Neutrino Data in Terms of Flavor Changing Neutrino Interactions. https://doi.org/10.1088/1126-6708%2F2000%2F07%2F006

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