A combined interpretation of cosmic ray light nuclei and antiproton measurements

Details A combined interpretation of cosmic ray light nuclei and antiproton measurements A combined interpretation of cosmic ray light nuclei and antiproton measurements

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011nimpa.630...67d&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 630, Issue 1, p. 67-69.

Physics

Scientific paper

Recently several experiments improved significantly our knowledge of cosmic ray (CR) spectra at high energy. In particular CREAM measured B/C, C/O and N/O ratios up to ˜1TeV/n and PAMELA observed the antiproton-to-proton ratio up to ˜100GeV with high accuracy. These results permit to put more stringent constraints on the free parameters involved in the diffusion-loss equation that describes the propagation of CRs in the Galaxy. To this purpose, we perform a new statistical analysis comparing updated experimental data with the predictions of an improved version of our numerical code DRAGON. We obtain well defined ranges of values for the diffusion coefficient normalization and index of the power-law dependence on rigidity as well as for the Alfvén velocity.

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