Antiprotons – read more

Figures 1-2 and Figure 3 show, respectively, the antiproton-to-proton flux ratio and the antiproton spectrum measured by PAMELA. The data, collected in the energy interval between 60 MeV and 180 GeV, show a good agreement with several theoretical calculations in which pure secondary production of antiprotons during the propagation of cosmic rays in the Galaxy was assumed.