Read article 'Hyperfine structure: from hydrogen to antihydrogen'
The ASACUSA experiment at CERN’s Antiproton Decelerator published the most precise in-beam measurement of the hydrogen ground-state hyperfine splitting.
Read article 'GBAR falls into place'
Located in CERN's Antiproton Decelerator hall, GBAR is specifically designed to measure the effect of gravity on antihydrogen atoms.
Read article 'BASE boosts precision of antiproton magnetic moment'
The measurement shows that the magnetic g-factors are identical within 0.8 parts per million.
Read article 'Antihydrogen atoms show their colour'
The ALPHA collaboration has reported the first ever measurement of the optical spectrum of an antimatter atom.
Read article 'Does antimatter fall up?'
Measuring the effect of gravity on antimatter is a long-standing story. Now we are in a position to test Einstein’s equivalence principle with antimatter by directly measuring the free fall of antia...
Read article 'CERN soups up its antiproton source'
The Extra Low ENergy Antiproton ring (ELENA) is now in the commissioning phase.
Read article 'New ALPHA measurement of the charge of antihydrogen'
Only a few direct measurements have been performed so far to test this conjecture.
Read article 'BASE compares charge-to-mass ratios of proton and antiproton to high precision'
This high-precision measurement was achieved by comparing the cyclotron frequencies of antiprotons and negatively charged hydrogen ions in a Penning trap.
Read article 'In the steps of the antiproton'
Claude Amsler looks at some of the studies over the years at CERN.
Read article 'ALPHA measures charge of antihydrogen'
ALPHAfound it to be compatible with zero to eight decimal places.
