Four-neutrino analysis of 1.5km-baseline reactor antineutrino oscillations

Abstract

The masses of sterile neutrinos are not yet known, and depending on the orders of magnitudes, their existence may explain reactor anomalies or the spectral shape of reactor neutrino events at 1.5km-baseline detector. Here, we present four-neutrino analysis of the results announced by RENO and Daya Bay, which performed the definitive measurements of ${\theta }_{13}$ based on the disappearance of reactor antineutrinos at km-order baselines. Our results using 3+1 scheme include the exclusion curve of $\Delta m_{41}^2$ vs. ${\theta }_{14}$ and the adjustment of ${\theta }_{13}$ due to correlation with ${\theta }_{14}$. The value of ${\theta }_{13}$ obtained by RENO and Daya Bay with a three-neutrino oscillation analysis is included in the $1\sigma$ interval of ${\theta }_{13}$ allowed by our four-neutrino analysis.

14 pages, 7 figures. arXiv admin note: text overlap with arXiv:1303.6173

References in corpus (6)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• The Reactor Antineutrino Anomaly
• Global status of neutrino oscillation parameters after Neutrino-2012
• Global fit to three neutrino mixing: critical look at present precision
• Improved Measurement of Electron Antineutrino Disappearance at Daya Bay

Cited by in corpus (5)

• Improved Search for a Light Sterile Neutrino with the Full Configuration of the Daya Bay Experiment
• Deviations in Tribimaximal Mixing From Sterile Neutrino Sector
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• New mixing schemes for (3+1) neutrinos
• Lepton masses and mixings, and muon anomalous magnetic moment in an extended $B-L$ model with type I seesaw mechanism