That was the Geman article:
http://www.focus.de/wissen/weltraum/...id_985901.html
They say the mass of this particle is within a value margin where it could destabilise vacuum itself - and by that it could make the universe collapsing. This theory is based on calculations done by Sidney Coleman and Frank de Luccia in 1980. Wikipedia links their names to this article about the so-called "false vacuum".
http://en.wikipedia.org/wiki/False_vacuum
That is not one but
two hijacking articles. Double facepalm, please!
P.S. Google also gives this:
http://www.physics.princeton.edu/~st...anDeLuccia.pdf Don'T ask me to explain the formulas, I cannot.