Examination on SK atmospheric neutrino experiment by the computer experiment

TL;DR

This paper uses computer simulations to analyze atmospheric neutrino events in the SuperKamiokande detector, questioning the reliability of the SK group's neutrino incident determination and confirming outside events align with no-oscillation models.

Contribution

It introduces a simulation-based examination of neutrino events inside and outside SK, challenging existing methods and validating outside event models without oscillation assumptions.

Findings

Inside events analysis questions SK's incident neutrino determination

Outside events match Monte Carlo simulations without oscillation

Methodology provides an alternative approach to neutrino event analysis

Abstract

We examine neutrino events occurring inside the SuperKamiokande (SK) detector and those occurring outside the same detector using computer simulations. We analyze the zenith angle distribution of Fully Contained Events and show the method for the determination of the incident neutrino by the SK group is unreliable. The analysis of the neutrino events occurring outside the detector shows these events agree with the Monte Carlo simulation without oscillation.