Atmospheric and Long Baseline Neutrino

TL;DR

This paper reports recent findings from Super-Kamiokande and K2K experiments, confirming neutrino oscillations and refining key oscillation parameters with high precision.

Contribution

It provides new, precise measurements of neutrino oscillation parameters using atmospheric and accelerator neutrino data.

Findings

Neutrino oscillation signals confirmed

Oscillation parameters constrained between 1.5×10^{-3} and 3.9×10^{-3} eV^2 for Δm^2

sin^2 2θ greater than 0.92

Abstract

This paper presents the recent results from Super-Kamiokande atmospheric neutrinos and from K2K accelerator neutrinos. Both results show the signal of neutrino oscillation, and provide new and precise information of oscillation parameters. The oscillation parameters are constraint to be between 1.5*10^{-3} eV^2 and 3.9*10^{-3} eV^2 for \Delta m^2 and to be greater than 0.92 for sin^2 2\theta.