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

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

1999-06-29

arxiv.org/abs/hep-ph/9906539v2

JHEP 0007:006,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 Postscript figures, uses ReVTeX. Updated analysis to 52 kTy Super-Kamiokande data. A new figure for the up-down as

Scientific paper

10.1088/1126-6708/2000/07/006

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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