Fig. 3: Neutrino signal.
From: Direct observation of coherent elastic antineutrino–nucleus scattering
a, The difference between data in the full reactor on time and the background model scaled to the total detector mass is shown. The vertical error bars represent the combined statistical uncertainties of data points and background model at 68% confidence level (1σ). At low energies, the rise from the neutrino signal can be seen. The line shows the predicted signal shape for comparison, including a 68% confidence level uncertainty band. The red vertical lines indicate the energy thresholds of the three detectors used in the analysis. In the first bin, only C3 contributes, in the second C3 + C5 and above 180 eV all three detectors. Residual systematic effects from energy non-linearity, background model uncertainties and the fit method are not incorporated in this plot. b, This graph shows the good agreement between the data and the background model above the signal region from 350 eV to 800 eV. c, This histogram shows the spread of the data points around the background model for the same energy interval as in b.
