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AEgIS experiment paves the way for new set of antimatter studies by laser-cooling positronium

AEgIS is one of several experiments at CERN’s Antimatter Factory producing and studying antihydrogen atoms with the goal of testing with high precision whether antimatter and matter fall to Earth in the same way. In a paper published today in Physical Review Letters, the AEgIS collaboration reports an experimental feat that will not only help it achieve this goal but also pave the way for a whole new set of antimatter studies, including the prospect to produce a gamma-ray laser that would allow researchers to look inside the atomic nucleus and have applications beyond physics. To create antihydrogen (a positron orbiting an antiproton), AEgIS directs a beam of positronium (an electron orbiting a positron) into a cloud of antiprotons produced and slowed down in the Antimatter Factory. When an antiproton and a positronium meet in the antiproton cloud, the positronium gives up its positron to the antiproton, forming antihydrogen. Producing antihydrogen in this way means that AEgIS can a ....

Ruggero Caravita , Physical Review Letters , Arge Hadron Collider , High Energy Physics ,

Small Black Holes in Quantum Gravity

The scale at which quantum gravitational effects become manifest, the species scale, has been argued to take values parametrically lower than the Planck scale. ....

Arge Hadron Collider , High Energy Physics ,

Searching for charming splittings at the LHC

Assessing the impact of parton masses in the fragmentation of high-energy particles has been a longstanding goal of experimental and theoretical communities in QCD. One of the most prominent characteristics of a massive splitting is the suppression of collinear branchings, the dead-cone effect. ....

Alba Soto Ontoso , Nima Zardoshti , Institute De Physique Theorique , Cth Department , Brookhaven National Lab , Institute De Physique , Quantum Chromodynamics , Arge Hadron Collider , High Energy Physics ,

Herwig Schopper - a century in physics

Director-General of CERN from 1981 until 1988, Professor Schopper has made landmark contributions to nuclear and particle physics, and to related technologies. ....

Professor Schopper , Middle East , Arge Hadron Collider , High Energy Physics ,

11th International Workshop on the Mechanisms of Vacuum Arcs (MeVArc 2024)

OverviewVacuum arcs are a concern in nearly every vacuum device under electric field; consequently they are present in a very wide range of applica ....

United States , Sandia National Laboratories , Granlibakken Resort , Lake Tahoe , Tahoe City , Emerald Bay , Arge Hadron Collider , High Energy Physics ,