The pinching method for Galactic cosmic ray positrons: implications in the light of precision measurements

Understand

Two years ago, the AMS collaboration released the most precise measurement of the cosmic ray positron flux.

• It confirms that pure secondary predictions fall below the data above 10 GeV, suggesting the presence of a primary component, e.g.
• annihilations of WIMPs dark matter.
• Most analyses have focused on the high-energy part of the spectrum, disregarding the GeV energy region where cosmic ray transport is harder to model and solar modulation comes into play.