Votes cast for and against the WIMP factor

Physicists this week duked it out over a bunch of WIMPs.

One team reported that it might have detected several of these hypothetical elementary particles, while another team presented evidence to the contrary. The new findings have generated intense interest because detection of the particles, called both WIMPs (weakly interacting massive particles) and neutralinos, could settle a  decades-old mystery in cosmology and help unify the four fundamental forces of physics.