Fig.
Fig. 5 shows the χ 2 as function of the DM mass for various DM annihilation (left) or DM decay (right) modes. We find that, independently of the non-observation of an excess in thē p PAMELA data, only some leptonic modes can reproduce all data. Here HESS observations play a key role demanding that the e ± excess terminates in a sharper way than what typical of non-leptonic channels, irrespectively of the DM density profile. DM heavier than 10 TeV that annihilates or decays into light quarks still provides a reasonable fit to PAMELA and FERMI data, if fitted conservatively. However it is disfavored by the HESS e + + e − data, and presumably the photon **data** as well ( in the annihilating case). 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:
