The only spectral feature that can allow one to discriminate the various modes lies at the high end of the spectrum between 1 and 3 TeV, where we only have the electron HESS **data** which is less precise than the FERMI data. The leptonic channels can be ordered according to the sharpness of their end-point:
2e > 4e ∼ 2µ > 4µ ∼ 2τ > ∼ 4τ.(13)
The main difference with respect to the previous ATIC e + + e − **data** [5] is that a peak is no longer present, and therefore the 2e mode (namely, DM annihilations or decays into e + e − ) is now excluded independently of the photon bounds, since it predicts a too sharp end-point. All other leptonic modes we consider provide comparably good fits to the data, that therefore cannot discriminate which (combination of) modes is the correct one. We also explored the spectra produced by polarized µ or τ , similarly finding that present **data** do not allow to discriminate the various possibilities.