Two independent teams of physicists working at the Large Hadron Collider have reported seeing traces of what they believe could be a previously unknown particle. The rejuvenated Large Hadron Collider might have achieved another breakthrough... provided everything lines up, that is. Two teams of CERN scientists have detected an excess of gamma ray pairs that they suspect might represent the radioactive decay of a previously unknown particle. The data is far from conclusive (there's a 1 in 93 chance that it's nothing), and the researchers don't expect to have enough data until they present at a convention next summer. However, it's rare that two groups notice the same anomaly -- that's frequently a sign that something's up.