Could X particle solve two puzzles?

Can one particle explain both dark matter and the mysterious origins of matter and antimatter? Some physicists think so. They're calling the as-yet-only-theoretical object the "X particle."

Physicists from Canada's TRIUMF particle-physics facility, the University of British Columbia and Brookhaven National Laboratory laid out their ideas on the X particle in a paper published last month by Physical Review Letters -- and since then, the ideas have been picked up by PhysicsWorld magazine as well as Discovery News. (You can read a full draft of the paper on the arxiv.org website.)... Full Story>>