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

Journal Article · Sun Dec 01 00:00:00 EST 2013 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2013/12/011· OSTI ID:22369874

Gaggero, Daniele ^[1]; Maccione, Luca ^[2]

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1. SISSA, via Bonomea 265, Trieste, 34136 (Italy)
2. Arnold Sommerfeld Center, Ludwig-Maximilians-Universität, Theresienstraße 37, München, D-80333 (Germany)

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 uncertainties, if energy-dependent effects are present in Fermi-LAT systematics. We also study possible deviations from charge symmetry in the extra component and find no compelling evidence for them.

• OSTI ID: 22369874
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 12; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DATASETS
ELECTRON SPECTRA
ENERGY DEPENDENCE
GEV RANGE 100-1000
HYPOTHESIS
POSITRONS
STANDARDS
SYMMETRY