Looking for a charge asymmetry in cosmic rays
  We combine the data from PAMELA and FERMI-LAT cosmic ray experiments by introducing a simple sum rule. This allows to investigate whether the lepton excess observed by these experiments is charge symmetric or not. We also show how the data can be used to predict the positron fraction at energies yet to be explored by the AMS-02 experiment. 
Isabella Masina
hep-ph astro-ph.CO astro-ph.HE