Implications of the AMS-02 positron fraction in cosmic rays

Qiang Yuan, Xiao-Jun Bi, Guo-Ming Chen +3

The AMS-02 collaboration has just released its first result of the cosmic positron fraction $e^{+}/(e^{-}+e^{+})$ with high precision up to $\sim 350$ GeV. The AMS-02 result shows the sa…