Antiprotons - Read More
Figure 1  and Figure 2 show the antiproton spectrum and the antiproton-to-proton flux ratio measured by PAMELA in the energy interval between 60 MeV and 300 GeV, compared with several theoretical calculations in which pure secondary production of antiprotons during the propagation of cosmic rays in the Galaxy was assumed. Figure 3 and Figure 4 show the same spectra together with other recent experimental data.