Axion Gone

Axion Gone: New tests find no sign of anomalous particle: Science News Online, Oct. 20, 2007
"Last year, physicists reported seeing tantalizing experimental traces of the axion, a hypothetical subatomic particle that's been mentioned as a possible constituent of cosmic dark matter. But the axion was showing up where theory said it shouldn't be. It now looks as if it wasn't there after all."
http://www.sciencenews.org/articles/20071020/fob5.asp