Precision constraints for three-flavor neutrino oscillations from the full MINOS+ and MINOS data set

TL;DR

This paper presents the final measurement of neutrino oscillation parameters using the complete MINOS and MINOS+ data sets, providing precise constraints on the mass-squared difference and mixing angle for three-flavor neutrino oscillations.

Contribution

It offers the most comprehensive analysis of MINOS data to date, improving the precision of key neutrino oscillation parameters for both mass hierarchies.

Findings

Measured | m^2_{32}| with high precision.

Determined  heta_{23} with reduced uncertainty.

Provided constraints consistent with previous results.

Abstract

We report the final measurement of the neutrino oscillation parameters $\Delta m^2_{32}$ and $\sin^2\theta_{23}$ using all data from the MINOS and MINOS+ experiments. These data were collected using a total exposure of $23.76 \times 10^{20}$ protons on target producing $\nu_{mu}$ and $\overline{\nu_\mu}$ beams and 60.75 kt$\cdot$yr exposure to atmospheric neutrinos. The measurement of the disappearance of $\nu_{\mu}$ and the appearance of $\nu_e$ events between the Near and Far detectors yields $|\Delta m^2_{32}|=2.40^{+0.08}_{-0.09}~(2.45^{+0.07}_{-0.08}) \times 10^{-3}$ eV$^2$ and $\sin^2\theta_{23} = 0.43^{+0.20}_{-0.04} ~(0.42^{+0.07}_{-0.03})$ at 68% C.L. for Normal (Inverted) Hierarchy.