Figure 1

Single-photon events at MiniBooNE for $6.46\times {10}^{20}$ protons on target in neutrino mode. A 25% efficiency is assumed. The hatched line represents the difference between the direct calculation and MiniBooNE ${\pi }^0$-constrained incoherent $\Delta \to N\gamma$ background. Data points correspond to the excess events reported in 4, Fig. 2.Reuse & Permissions

Figure 2

Distributions in $Q_{\mathrm{QE}}^2$ and $\cos \theta$ for the events displayed in Fig. 1 for $E_{\mathrm{QE}}=300–475\mathrm{MeV}$. Data points correspond to Figs. 4 and 5 of 4.Reuse & Permissions

Figure 3

Comparison of single-photon events to MiniBooNE data [5] with other backgrounds subtracted in antineutrino mode.Reuse & Permissions

Figure 4

Comparison of single-photon events to MiniBooNE data [28] with other backgrounds subtracted in antineutrino mode.Reuse & Permissions