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Examining the Secondary Product Origin of Cosmic-Ray Positrons with the Latest AMS-02 Data

Examining the Secondary Product Origin of Cosmic-Ray Positrons with the Latest AMS-02 Data

Measurements of cosmic-ray (CR) positron fraction by PAMELA and other experiments have found an excess above 10 GeV relative to the standard predictions for secondary production in the interstellar medium (ISM). Although the excess has been mostly suggested to arise from some primary sources of positrons (such as pulsars and …