Reactor antineutrino experiments

Abstract

Neutrinos are elementary particles in the standard model of particle physics. There are 3 flavors of neutrinos that oscillate among themselves. Their oscillation can be described by a 3$\times$3 unitary matrix, containing three mixing angles ${\theta }_{12}$, ${\theta }_{23}$, ${\theta }_{13}$, and one CP phase. Both ${\theta }_{12}$ and ${\theta }_{23}$ are known from previous experiments. ${\theta }_{13}$ was unknown just two years ago. The Daya Bay experiment gave the first definitive non-zero value in 2012. An improved measurement of the oscillation amplitude ${\sin }^{2}2({\theta }_{13})$ = $0.090_{-0.009}^{+0.008}$ and the first direct measurement of the ${\bar{\nu }}_e$ mass-squared difference $\mid$$\Delta m_{ee}^2$$\mid$ = $(2.59_{-0.20}^{+0.19})\times 10^{-3}\mathrm{e}{\mathrm{V}}^2$ were obtained recently. The large value of ${\theta }_{13}$ boosts the next generation of reactor antineutrino experiments designed to determine the neutrino mass hierarchy, such as JUNO and RENO-50 .

References in corpus (9)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Indication for the disappearance of reactor electron antineutrinos in the Double Chooz experiment
• Improved search for muon-neutrino to electron-neutrino oscillations in MINOS
• Unambiguous Determination of the Neutrino Mass Hierarchy Using Reactor Neutrinos
• The LMA MSW Solution of the Solar Neutrino Problem, Inverted Neutrino Mass Hierarchy and Reactor Neutrino Experiments
• A side-by-side comparison of Daya Bay antineutrino detectors
• Precision Neutrino Oscillation Physics with an Intermediate Baseline Reactor Neutrino Experiment
• Diagnosing Degenerate Higgs Bosons at 125 GeV