Latest results from Daya Bay using the full dataset

TL;DR

This paper presents the latest and most precise measurements of neutrino oscillation parameters from the Daya Bay experiment's full dataset, including $ heta_{13}$ and $ m riangle m^2_{32}$, along with additional neutrino search results.

Contribution

It provides the most precise measurements of $ heta_{13}$ and $ m riangle m^2_{32}$ using the full dataset from the Daya Bay experiment, including new analyses on high energy neutrinos.

Findings

$ heta_{13}$ measured as 0.0851 ± 0.0024

$ m riangle m^2_{32}$ measured as (2.466 ± 0.060)×10^{-3} eV^2 (normal ordering)

Most precise measurements of key neutrino oscillation parameters to date

Abstract

The Daya Bay Reactor Neutrino Experiment was designed with the primary goal of precisely measuring the neutrino mixing parameter, $\theta_{13}$. Eight identically-designed gadolinium-doped liquid scintillator detectors installed in three underground experimental halls measure the reactor antineutrinos from six nuclear reactors at different distances. Until its shutdown at the end of 2020, Daya Bay experiment has acquired nearly 6 million inverse beta decay candidates with neutron captured on gadolinium. In this talk, the latest neutrino oscillation analysis results based on full data will be presented. The resulting oscillation parameters are $\sin^{2}2\theta_{13}$ = 0.0851 $\pm$ 0.0024, $\Delta m^{2}_{32}$ = (2.466 $\pm$ 0.060) $\times$ $10^{-3}$ ${\rm eV}^{2}$ for the normal mass ordering or $\Delta m^{2}_{32}$ = -(2.571 $\pm$ 0.060) $\times$ $10^{-3}$ ${\rm eV}^{2}$ for the inverted mass ordering, which are the most precise measurement of $\theta_{13}$ and $\Delta m^{2}_{32}$ so far. Moreover, latest results on other topics such as the search of high energy reactor neutrino is included as well.