On Monday the XENON100 collaboration published an analysis of the first experimental results from its dark-matter detector. It reported no evidence of dark matter, the substance thought to constitute over 80% of mass in the universe. The experiment covered a similar parameter range as dark-matter searches DAMA and CoGeNT, which have previously claimed possible evidence for dark matter. As a result, the XENON100 team concluded that both the DAMA and CoGeNT evidence could be excluded.
But now the DAMA and CoGeNT collaborations claim that the XENON100 researchers' analysis is flawed, and that their original evidence for dark matter should remain intact
Blog posts describing the approaches followed by the contestants that ranked 1st, 2nd and 3rd.
