Wednesday, July 3, 2013

1307.0271 (Daniele Gaggero et al.)

Model independent interpretation of recent CR lepton data after AMS-02    [PDF]

Daniele Gaggero, Luca Maccione
We model the CR leptonic fluxes above 20 GeV in terms of a superposition of a standard and a charge symmetric extra component, which we generically describe as power-laws in momentum. We investigate under these hypotheses the compatibility between AMS-02, Fermi-LAT and PAMELA datasets on positron fraction, electron+positron spectrum and electron spectrum respectively. We find that it is possible to reconcile AMS and Fermi-LAT data within Fermi-LAT systematics. No compelling evidence of a charge asymmetry in the extra component emerges.
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