Improved Measurement of Electron Antineutrino Disappearance at Daya Bay

Abstract

We report an improved measurement of the neutrino mixing angle ${\theta }_{13}$ from the Daya Bay Reactor Neutrino Experiment. We exclude a zero value for ${\sin }^{2}2{\theta }_{13}$ with a significance of 7.7 standard deviations. Electron antineutrinos from six reactors of 2.9 GW${}_{\mathrm{th}}$ were detected in six antineutrino detectors deployed in two near (flux-weighted baselines of 470 m and 576 m) and one far (1648 m) underground experimental halls. Using 139 days of data, 28909 (205308) electron antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to the expected number of antineutrinos assuming no oscillations at the far hall is $0.944\pm 0.007(stat.)\pm 0.003(syst.)$. An analysis of the relative rates in six detectors finds ${\sin }^{2}2{\theta }_{13}=0.089\pm 0.010(stat.)\pm 0.005(syst.)$ in a three-neutrino framework.

21 pages, 24 figures. Submitted to and accepted by Chinese Physics C. Two typos were corrected. Description improved

References in corpus (7)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Measurement of Neutrino Oscillation by the K2K Experiment
• Global status of neutrino oscillation parameters after Neutrino-2012
• Measurement of the neutrino mass splitting and flavor mixing by MINOS
• A side-by-side comparison of Daya Bay antineutrino detectors
• Muon simulation codes MUSIC and MUSUN for underground physics

Cited by in corpus (70)

• Neutrino oscillations refitted
• Search for a Light Sterile Neutrino at Daya Bay
• Neutrino Mass Hierarchy
• Statistical Evaluation of Experimental Determinations of Neutrino Mass Hierarchy
• Generalised CP and $\Delta (6n^2)$ Family Symmetry in Semi-Direct Models of Leptons
• The Future of High-Energy Astrophysical Neutrino Flavor Measurements
• Neutrino Oscillation Physics Potential of the T2K Experiment
• Generalised CP and $\Delta (96)$ Family Symmetry
• Testing Radiative Neutrino Mass Models at the LHC
• Reference worldwide model for antineutrinos from reactors
• Independent Measurement of Theta13 via Neutron Capture on Hydrogen at Daya Bay
• Lepton Flavor Mixing and CP Symmetry
• The Daya Bay and T2K results on ${\sin }^{2}2{\theta }_{13}$ and Non-Standard Neutrino Interactions
• Antineutrino Energy Spectrum Unfolding Based on the Daya Bay Measurement and Its Applications
• $A_4$ and CP symmetry and a model with maximal CP violation
• A partial $\mu$-$\tau$ symmetry and its prediction for leptonic CP violation
• Alternative Schemes of Predicting Lepton Mixing Parameters from Discrete Flavor and CP Symmetry
• Constraining new physics scenarios in neutrino oscillations from Daya Bay data
• Constraining Absolute Neutrino Masses via Detection of Galactic Supernova Neutrinos at JUNO
• Long-Baseline Neutrino Experiments
• The symmetry approach to quark and lepton masses and mixing
• Neutrino Magnetic Moment, CP Violation and Flavor Oscillations in Matter
• Lepton Mixing in $A_5$ Family Symmetry and Generalized CP
• CP Violation with Majorana neutrinos in K Meson Decays
• Abundances of uranium and thorium elements in Earth estimated by geoneutrino spectroscopy
• Probing Neutrino Oscillation Parameters using High Power Superbeam from ESS
• Exploring SMEFT Induced Non-Standard Interactions from COHERENT to Neutrino Oscillations
• Exploring the Earth matter effect with atmospheric neutrinos in ice
• Antineutrino Science in KamLAND
• Prediction of Leptonic CP Phase in $A_4$ symmetric model
• Extrinsic and Intrinsic CPT Asymmetries in Neutrino Oscillations
• Minimal 3+2 sterile neutrino model at LBNE
• Deviations from Tribimaximal Neutrino Mixing using a Model with $\Delta (27)$ Symmetry
• Shifts of neutrino oscillation parameters in reactor antineutrino experiments with non-standard interactions
• Prediction of leptonic CP phase from perturbatively modified tribimaximal (or bimaximal) mixing
• A model of quarks with Delta (6N^2) family symmetry
• Short Baseline Reactor Antineutrino-Electron Scattering Experiments and Non-Standard Neutrino Interactions at Source and Detector
• Quasidegeneracy of Majorana Neutrinos and the Origin of Large Leptonic Mixing
• Seesaw mechanism with four texture zeros in the neutrino Yukawa matrix
• Seasonal Variation of the Underground Cosmic Muon Flux Observed at Daya Bay
• A method for sharing dynamic geometry information in studies on liquid-based detectors
• Lepton flavor violation in the supersymmetric seesaw model after the LHC 8 TeV run
• Four-neutrino analysis of 1.5km-baseline reactor antineutrino oscillations
• Revisiting the sensitivity studies for leptonic CP violation and mass hierarchy with T2K, NOvA and LBNE experiments
• Light dark bosons in the JUNO-TAO neutrino detector
• Detecting supernovae neutrino with Earth matter effect
• Measurement of the liquid scintillator nonlinear energy response to electron
• Revisiting Discrete Dark Matter Model:θ_{13}\neq0 and ν_{R} Dark Matter
• Perturbation to TBM mixing and its phenomenological implications
• Fermion Masses and Mixing in General Warped Extra Dimensional Models
• Onsite data processing and monitoring for the Daya Bay Experiment
• Proton decay and $\mu \to e+\gamma$ Connection in a Renormalizable SO(10) GUT for Neutrinos
• Target Mass Monitoring and Instrumentation in the Daya Bay Antineutrino Detectors
• Neutrino Physics Now and in the Near Future
• Searching for new physics through neutrino non-standard interactions
• A Decade of Discoveries by the Daya Bay Reactor Neutrino Experiment
• A Time-to-Digital Converter-based Correction Method for Charge Measurement through Area Integration
• Muon Reconstruction in the Daya Bay Water Pools
• The Water Purification System for the Daya Bay Reactor Neutrino Experiment
• Coincidence-based reconstruction for reactor antineutrino detection in gadolinium-doped Cherenkov detectors
• Generating CP violation from a modified Fridberg-Lee model
• Probing Non-Standard Interactions at Daya Bay
• A Fourth Neutrino and its Consequences on CP Asymmetries
• Energy Non-linearity study at Daya Bay
• Constraining nuclear effects in Argon using machine learning algorithms
• Using Machine Learning to Separate Cherenkov and Scintillation Light in Hybrid Neutrino Detector
• Influence of cross-sectional uncertainty on sensitivity studies of DUNE and T2HK experiments
• NuFIT: Three-Flavour Global Analyses of Neutrino Oscillation Experiments
• Status and Perspectives of Neutrino Physics
• The Nature of Massive Neutrinos