"The annihilation of these exotic particles with each other would produce normal particles such as electrons, positrons, protons and antiprotons that can be observed by scientists," said Eun-Suk Seo, ATIC lead at the University of Maryland, College Park.
Read More: "Mysterious Source of High-Energy Cosmic Radiation Discovered"
NASA press release 08-301, November 19, 2008

UMD