Figure 6: The upper limit on the annihilation cross section derived in this work for the b ¯ b channel based on the extended dataset in [ 26 ] (red solid line) is compared to the results recently obtained by Di Mauro and Winkler [ 22 ] (green dashed curve) and Kahlhoefer et al. [ 23 ] (orange dot-dashed line) from analysing the same data. The upper limit on the annihilation cross section derived in this work for the b ¯ b channel based on the older antiproton dataset [ 24 ] is displayed (blue solid line) for