Maxwell's demon cooling trap measures the magnetic moment of antiprotons with higher precision than ever before ...

Taken in 2023, these results show preliminary plots of the antiproton's production cross section—the probability that ...

The Antiproton A quarter-century ago physical theory pointed to the existence of a fundamental particle of matter with the mass of the proton but the opposite charge. An account of its discovery ...

BASE takes antiprotons that have been decelerated by the Antiproton Decelerator and the Extra Low Energy Antiproton ...

A long-awaited calculation of the W boson’s mass agrees with theory, contradicting a previous anomaly that had raised the ...

CERN’s calculation of the W boson’s mass agrees with theory, contradicting a previous anomaly that had raised the possibility ...

The heaviest antimatter nucleus to date was spotted in a particle accelerator. It could provide new insights into the nature ...

A new discovery could finally shed light on a persistent cosmological mystery. The heaviest antimatter nucleus ever detected ...

The CMS experiment at CERN is the latest to weigh in on the mass of the W boson—an elementary particle that, along with the Z ...

The antimatter heavyweight, called antihyperhydrogen-4, is made up of an antiproton, two antineutrons and one antihyperon (a baryon that contains a strange quark). Physicists found traces of this ...

Geared for discovery more so than delicacy, the LHC is defying expectations by rivalling lepton colliders for precision.