Left panel: interstellar flux (multiplied by E2) of primary positrons computed with all propagation effects (ΦDM, solid lines) and with the high-energy approximation (, dotted lines) for a 10 TeV WIMP annihilating into pairs with ⟨ σv ⟩ =3 × 10-26 cm3 s-1, for the Min (blue), Med (red), and Max (green) models. Right panel: relative error above 10 GeV of the high-energy approximation for primary positrons compared to the exact result.
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