In the literal sense, nothing is simpler than an elementary particle: By definition, a particle is considered to be elementary only if there is no evidence that it is made up of smaller constituents.

Scientific Organizers: Clay Córdova (Chicago), David Poland (Yale), Sasha Zhiboedov (CERN) The program will consist of a pedagogical series of lectures given over a four-week period, three or four ...

Physicists have found that an elementary particle called the W boson appears to be 0.1% too heavy — a tiny discrepancy that could foreshadow a huge shift in fundamental physics. The measurement, ...