The Standard Model of particle physics predicts an asymmetry between matter and antimatter known as charge-parity (CP) violation. But the size of this...
Physicists with the ALICE Collaboration at CERN’s Large Hadron Collider (LHC) have seen the first ever evidence of antihyperhelium-4, which is composed...
Physicists from the ALPHA Collaboration at CERN’s Antimatter Factory have demonstrated the existence of gravity between antimatter and Earth, reaffirming...
Antimatter particles such as positrons and antiprotons abound in the cosmos. Much less common are light antinuclei, composed of antiprotons and antineutrons,...
Symmetries make the world go round, but so do asymmetries. A case in point is an asymmetry known as charge-parity asymmetry, which is required to explain...
Dr. Melvin Vopson, a physicist with the School of Mathematics and Physics at the University of Portsmouth, has already published research suggesting that...
Using NASA’s Chandra X-ray Observatory, astronomers have observed a remarkable X-ray filament generated by the gamma-ray pulsar PSR J2030+4415.
PSR J2030+4415...
The Standard Model of particle physics is both incredibly successful and glaringly incomplete. Among the questions left open is the striking imbalance...
The neutron is a bound system of three valence quarks and a neutral sea consisting of gluons and quark-antiquark pairs. Although the proton was discovered...
Physicists with the STAR Collaboration at Brookhaven National Laboratory’s Relativistic Heavy Ion Collider (RHIC) have produced definitive evidence for...
Physicists from the LHCb Collaboration at CERN have proved that a subatomic particle called the charm meson can switch into its antiparticle and back again....
Physicists from the ALPHA (Antihydrogen Laser Physics Apparatus) Collaboration at CERN have successfully demonstrated laser cooling of antihydrogen, the...
In 1947, American physicist Willis Lamb and his colleagues observed an incredibly small shift in the energy levels of the hydrogen atom as the atom’s...
Physicists from the Large Hadron Collider beauty (LHCb) Collaboration at CERN have observed, for the first time, the matter-antimatter asymmetry known...
Physicists from the Large Hadron Collider beauty (LHCb) Collaboration at CERN have discovered a previously unknown particle that consists of a charm quark...
Physicists from the AEgIS (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) Collaboration at CERN have found a new way of making long-lived...
Physicists from the ALPHA Collaboration at CERN have detected the Lyman-alpha transition — when the hydrogen electron transitions between the lowest-energy...
In a paper published in the journal Science, a team of physicists from Japan and Germany reports the most precise measurement ever made of the magnetic...
