A new measurement finds the universe's teensiest particles weigh no more than one-millionth the mass of an electron.

Quantum superposition is a phenomenon in which a tiny particle can be in two states at the same time — but only if it is not ...

Researchers at the CMS collaboration at CERN have reported the discovery of the smallest hadron in existence, the toponium.

As if atoms weren’t already mind-blowingly small, never mind subatomic particles, CERN researchers in the CMS Collaboration ...

In just the first 259 days of data collection, KATRIN, a beta-decay-based detector in Germany, has set the smallest upper ...

Primordial black holes are the earliest black holes thought to exist, and they vanished almost as fast as they came into ...

The CMS collaboration at CERN has observed an unexpected feature in data produced by the Large Hadron Collider (LHC), which ...

Quarks are the reason protons have a positive charge. Each quark has a fraction of an electric charge. A proton has two up ...

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string ...

The CMS collaboration at CERN has observed an unexpected feature in data produced by the Large Hadron Collider (LHC), which could point to the existence of the smallest composite particle yet ...

was going through congratulatory emails Tuesday about her team’s simulation of the electromagnetic fields between some of the smallest particles in the universe — positrons and electrons.

A new estimate of the ghostly particle’s maximum possible mass brings physicists a tad closer to understanding the universe. By Katrina Miller Katrina Miller studied neutrinos in graduate school ...