%0 Generic %1 gaggero2013pamela %A Gaggero, Daniele %A Grasso, Dario %A Maccione, Luca %A Di Bernardo, Giuseppe %A Evoli, Carmelo %D 2013 %K cosmic electron positron rays %T PAMELA positron and electron spectra are reproduced by 3-dimensional cosmic-ray modeling %U http://arxiv.org/abs/1311.5575 %X 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.

@misc{gaggero2013pamela, abstract = {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.}, added-at = {2013-11-25T18:33:42.000+0100}, author = {Gaggero, Daniele and Grasso, Dario and Maccione, Luca and Di Bernardo, Giuseppe and Evoli, Carmelo}, biburl = {https://www.bibsonomy.org/bibtex/2fb85c23414189d3c29fdcbf2b84fe631/miki}, description = {[1311.5575] PAMELA positron and electron spectra are reproduced by 3-dimensional cosmic-ray modeling}, interhash = {035e73c93c1882a59e22844a6d058395}, intrahash = {fb85c23414189d3c29fdcbf2b84fe631}, keywords = {cosmic electron positron rays}, note = {cite arxiv:1311.5575Comment: 4 pages, 3 figures. Prepared for submission to PRB : Rapid Communications. Some of the results are obtained with the DRAGON code (http://www.dragonproject.org)}, timestamp = {2013-11-25T18:33:42.000+0100}, title = {PAMELA positron and electron spectra are reproduced by 3-dimensional cosmic-ray modeling}, url = {http://arxiv.org/abs/1311.5575}, year = 2013 }