An unforeseen feature in proton-proton collisions previously observed by the CMS experiment at CERN's Large Hadron Collider ...

Scientists at CERN have observed an unexpected phenomenon within the world’s largest particle accelerator that suggests that ...

This new measurement, which is a first for the CMS experiment, uses a new technique that makes it the most elaborate investigation of the W boson's mass to date.

The CMS experiment has now contributed to this global endeavor with its first W boson mass measurement. The keenly anticipated result, 80,360.2 with an uncertainty of 9.9 MeV, ...

Despite years of searching, both CMS and another LHC experiment, ATLAS, have yet to find conclusive evidence to validate the theory of supersymmetry. Valentin Flauraud/AFP via Getty Images.

Physicists on the CMS experiment announce the most elaborate mass measurement of a particle that is notoriously difficult to study and has captivated the physics community for decades. After an ...

Physicists on the CMS experiment announce the most elaborate mass measurement of a particle that is notoriously difficult to study and has captivated the physics community for decades.

The CMS experiment is distinct from the other experiments that have made this measurement because of its compact design, its specialized sensors for fundamental particles called muons, and its ...