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Possible causes of a rise with energy of the cosmic ray positron fraction
Based on general considerations rather than model-dependent fits to specific scenarios, we argue that an increase with energy of the positron fraction in cosmic rays, suggested by several experiments at E>~10 GeV, most likely requires a primary source of electron-positron pairs. We discuss the po...
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| Lenguaje: | eng |
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2008
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| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.79.021302 http://cds.cern.ch/record/1136631 |