Charge Asymmetry from Cosmic Sum Rules

May 26, 2011

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Recently the paper Cosmic-ray Sum Rules by Mads T. Frandsen, Isabella Masina, and Francesco Sannino has been accepted for publication as a Brief Report in Physical Review D. The journal has subsequently asked to further publicize our work due to its potential high relevance.

Unexpected features in the energy spectra of cosmic rays electrons and positrons have been recently observed by PAMELA and Fermi-LAT satellite experiments, opening to the exciting possibility of an indirect manifestation of new physics. In our work we suggested, for the first time, a new model independent way to establish whether the source of these features violates fundamental symmetries such as charge asymmetry.
To this end we introduced a new efficient parameter to be determined directly by the experimental data whose value is the ratio of unknown electrons to positrons. Experimental results as well as model computations for Dark Matter, for example, will be efficiently characterized via our novel and universal sum rules.

The paper can be found on arXiv.org.