March CERN Courier has a centre spread article on the Tracker with a cover picture.

The CMS Collaboration probes decays of the Z boson which would defy our expectations of lepton behavior How strict are Nature's conservation laws governing the interactions among elementary particles? Physicists once assumed, based on experience…

  Animated version: In a first search of its kind at the LHC, the CMS experiment looks for light beyond-the-standard-model particles with mass in the GeV range decaying to charged hadrons and muons. It establishes that if they exist, they…

CMS sees evidence of the Upsilon meson decaying into two tau leptons for the first time at a hadron collider Beyond our best current understanding of particle physics, encapsulated in the standard model, various theoretical models predict the…