Diagnosing the Reactor Antineutrino Anomaly with Global Antineutrino Flux Data

Abstract

We have examined the impact of new Daya Bay, Double Chooz, and RENO measurements on global fits of reactor antineutrino flux data to a variety of hypotheses regarding the origin of the reactor antineutrino anomaly. In comparing RENO and Daya Bay measurements of inverse beta decay (IBD) yield versus ${}^{239}$Pu fission fraction, we find differing levels of precision in measurements of time-integrated yield and yield slope, but similar central values, leading to modestly enhanced isotopic IBD yield measurements in a joint fit of the two datasets. In the absence of sterile neutrino oscillations, global fits to all measurements now provide 3σ preference for incorrect modeling of specific fission isotopes over common mis-modeling of all beta-converted isotopes. If sterile neutrino oscillations are considered, global IBD yield fits provide no substantial preference between oscillation-including and oscillation-excluding hypotheses: hybrid models containing both sterile neutrino oscillations and incorrect ${}^{235}$U or ${}^{239}$Pu flux predictions are favored at only 1-2σ with respect to models where ${}^{235}$U, ${}^{238}$U, and ${}^{239}$Pu are assumed to be incorrectly predicted.

arXiv comment7 pages, 4 figures, 3 tables

References in corpus (32)

• The Reactor Antineutrino Anomaly
• Improved Predictions of Reactor Antineutrino Spectra
• Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station
• On the determination of anti-neutrino spectra from nuclear reactors
• Final results from the Palo Verde Neutrino Oscillation Experiment
• Sterile neutrino search at NEOS Experiment
• Systematic Uncertainties in the Analysis of the Reactor Neutrino Anomaly
• Updated Global 3+1 Analysis of Short-BaseLine Neutrino Oscillations
• Search for sterile neutrinos at the DANSS experiment
• Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay
• Light Sterile Neutrinos: Models and Phenomenology
• Light sterile neutrinos
• Reactor Neutrino Spectra
• Spectral Structure of Electron Antineutrinos from Nuclear Reactors
• First search for short-baseline neutrino oscillations at HFIR with PROSPECT
• The Possible Origin and Implications of the Shoulder in Reactor Neutrino Spectra
• Online Monitoring of the Osiris Reactor with the Nucifer Neutrino Detector
• The impact of sterile neutrinos on CP measurements at long baselines
• Model-Independent ${\bar{\nu }}_e$ Short-Baseline Oscillations from Reactor Spectral Ratios
• Sterile Neutrinos or Flux Uncertainties? - Status of the Reactor Anti-Neutrino Anomaly
• Imprints of CP violation induced by sterile neutrinos in T2K data
• Vanishing effective mass of the neutrinoless double beta decay including light sterile neutrinos
• Neutrinoless Double Beta Decay in the Presence of Light Sterile Neutrinos
• Predictions for Neutrinoless Double-Beta Decay in the 3+1 Sterile Neutrino Scenario
• Reactor Fuel Fraction Information on the Antineutrino Anomaly
• Precise Determination of the U-235 Reactor Antineutrino Cross Section per Fission
• Prospects for Improved Understanding of Isotopic Reactor Antineutrino Fluxes
• Impact of Fission Neutron Energies on Reactor Antineutrino Spectra
• Improved Determination of the ${}^{235}\text{U}$ and ${}^{239}\text{Pu}$ Reactor Antineutrino Cross Sections per Fission
• Nuclear Zemach Moments and Finite-Size Corrections to Allowed Beta Decay
• CP-Invariance Violation at Short-Baseline Experiments in 3+1 Neutrino Scenarios
• Weak Magnetism Correction to Allowed Beta-decay for Reactor Antineutrino Spectra

Cited by in corpus (28)

• Flavor structures of charged fermions and massive neutrinos
• Sterile Neutrinos
• Status of Light Sterile Neutrino Searches
• Where Are We With Light Sterile Neutrinos?
• Improved Short-Baseline Neutrino Oscillation Search and Energy Spectrum Measurement with the PROSPECT Experiment at HFIR
• Reactor antineutrino anomaly in light of recent flux model refinements
• White Paper on New Opportunities at the Next-Generation Neutrino Experiments (Part 1: BSM Neutrino Physics and Dark Matter)
• Statistical significance of the sterile-neutrino hypothesis in the context of reactor and gallium data
• Sterile Neutrinos and the Global Reactor Antineutrino Dataset
• Measurement of the Antineutrino Spectrum from ${}^{235}$U Fission at HFIR with PROSPECT
• Sterile Neutrino Searches with MicroBooNE: Electron Neutrino Disappearance
• Reevaluating Reactor Antineutrino Anomalies with Updated Flux Predictions
• Accurate Measurement of the Electron Antineutrino Yield of U-235 Fissions from the STEREO Experiment with 119 Days of Reactor-On Data
• Statistical interpretation of sterile neutrino oscillation searches at reactors
• Constraining Sterile Neutrino Cosmology with Terrestrial Oscillation Experiments
• KATRIN bound on 3+1 active-sterile neutrino mixing and the reactor antineutrino anomaly
• Reactor antineutrino flux and anomaly
• PROSPECT-II Physics Opportunities
• Mapping reactor neutrino spectra from TAO to JUNO
• New Realization of the Conversion Calculation for Reactor Antineutrino Fluxes
• Future searches for light sterile neutrinos at nuclear reactors
• Status of Anomalies and Sterile Neutrino Searches at Nuclear Reactors
• Ab initio calculations of reactor antineutrino fluxes with exact lepton wave functions
• Light, Unstable Sterile Neutrinos: Phenomenology, a Search in the IceCube Experiment, and a Global Picture
• Sterile neutrino oscillometry with Jinping
• Model-Independent Determination of Isotopic Cross Sections per Fission for Reactor Antineutrinos
• Exploring Current Constraints on Antineutrino Production by ${}^{241}$Pu and Paths Towards the Precision Reactor Flux Era
• New sources of leptonic CP violation at the DUNE neutrino experiment