Super-Kamiokande data and atmospheric neutrino decay
G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia (U. of Bari, INFN,, Bari)
TL;DR
This paper evaluates whether neutrino decay can explain the atmospheric neutrino anomaly using Super-Kamiokande data, and finds that the decay hypothesis does not match the observed muon distributions.
Contribution
It provides a quantitative analysis of neutrino decay hypothesis against recent Super-Kamiokande data, challenging its viability.
Findings
Neutrino decay cannot reproduce muon distribution data
Decay hypothesis fails to explain the zenith angle distributions
Supports alternative explanations for the neutrino anomaly
Abstract
Neutrino decay has been proposed as a possible solution to the atmospheric neutrino anomaly, in the light of the recent data from the Super-Kamiokande experiment. We investigate this hypothesis by means of a quantitative analysis of the zenith angle distributions of neutrino events in Super-Kamiokande, including the latest (45 kTy) data. We find that the neutrino decay hypothesis fails to reproduce the observed distributions of muons.
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