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 ...

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

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

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

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 ...

An artistic representation of antihyperhydrogen-4 — an antimatter hypernucleus made of an antiproton, two antineutrons, and an antilambda particle — created in a collision of two gold nuclei (left).