Bergstrom L, Bringmann T, Cholis I, Hooper D, Weniger C. New limits on dark matter
annihilation from Alpha Magnetic Spectrometer cosmic ray positron data. Physical Review
Letters. October 25, 2013;111:171101. doi: 10.1103/PhysRevLett.111.171101.
Aguilar M, Alberti G, Alpat B, et al. First result from the Alpha Magnetic Spectrometer on the
International Space Station: Precision measurement of the positron fraction in primary cosmic
rays of 0.5–350 GeV. Physical Review Letters. April 3, 2013;110(14): 141102 -1-141102-10. doi:
10.1103/PhysRevLett.110.141102.
This investigation is ongoing and additional results are pending publication.