Аннотация
The PAMELA collaboration recently released the $e^+$ absolute spectrum
between 1 and 300 GeV in addition to the positron fraction and $e^-$ spectrum
previously measured in the same time period. We use the newly developed
3-dimensional upgrade of the DRAGON code and the charge dependent solar
modulation HelioProp code to consistently describe those data. We obtain very
good fits of all data sets if a $e^+$ + $e^-$ hard extra-component peaked at 1
TeV is added to a softer $e^-$ background and the secondary $e^\pm$ produced by
the spallation of cosmic ray proton and helium nuclei. All sources are assumed
to follow a realistic spiral arm spatial distribution. Remarkably, PAMELA data
do not display any need of charge asymmetric extra-component. Finally, plain
diffusion, or low re-acceleration, propagation models which are tuned against
nuclear data, nicely describe PAMELA lepton data with no need to introduce a
low energy break in the proton and Helium spectra.
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