Positrons from cosmic rays interactions and dark matter annihilations

  title={Positrons from cosmic rays interactions and dark matter annihilations},
  author={Roberto A Lineros},
  journal={arXiv: High Energy Astrophysical Phenomena},
  • R. Lineros
  • Published 3 February 2010
  • Physics
  • arXiv: High Energy Astrophysical Phenomena
The electron and positron cosmic rays puzzle has triggered a revolution in the field of astroparticle physics. Many hypotheses have been proposed to explain the unexpected rise of the positron fraction, observed by HEAT and PAMELA experiments, for energies larger than few GeVs. In this work, we study sources of positron cosmic rays related to annihilation of dark matter and secondary production. In both cases, we consider the impact of uncertainties related to dark matter physics, nuclear… 
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