Fig. 7

Doublet resolution using an ordinary mean (blue circles), a weighted mean (red squares) compared to the singlet resolution (green triangles) for signal neutrinos (Γ = 3, Ejet = 3 × 1051 erg). Applying the directional coincidence cut ΔΨ < 4° (black triangles) keeps mainly well-reconstructed doublets and yields a further improvement of the doublet resolution (IC 59).
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