Differential γ-ray energy spectra originating from final-state fragmentation of WIMP annihilation. Four different WIMP models are depicted: mass mχ = 500 GeV, final states: (solid black line), W + W − (dashed red line), τ + τ − (dotted blue line); mass mχ = 150 GeV, final state τ + τ − (dot-dashed green line). The parametrisations are valid down to E/mχ ≈ 0.01. The grey-shaded area indicates the considered energy range E ∈ [10;100] GeV.
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