New Force In Nature?

Check out this article from BBC News.  Seems that while smashing atoms in the Tevatron Accelerator they may have not only found a new particle but the existence of this new particle would mean that there is a new "force" to add to the gravity, electromagnetism, weak and strong forces. The article noted:

"If proved, it will be a completely new, unanticipated particle; researchers say it cannot be the much sought-after Higgs boson.

It could also signal a new fundamental force of nature, and the most radical change in physics for decades."