Antihydrogen atoms show their colour
The ALPHA collaboration has reported the first ever measurement of the optical spectrum of an antimatter atom.
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...
CERN soups up its antiproton source
The Extra Low ENergy Antiproton ring (ELENA) is now in the commissioning phase.
New ALPHA measurement of the charge of antihydrogen
Only a few direct measurements have been performed so far to test this conjecture.
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.
In the steps of the antiproton
Claude Amsler looks at some of the studies over the years at CERN.
ALPHA measures charge of antihydrogen
ALPHAfound it to be compatible with zero to eight decimal places.
ASACUSA produces first beam of antihydrogen atoms for hyperfine study
The ASACUSA collaboration reports the unambiguous detection of antihydrogen atoms 2.7 m downstream from their production.
ALPHA’s first antihydrogen spectroscopy
The ALPHA collaboration has reported the first-ever resonant interaction with the antihydrogen atom.
ALPHA traps antihydrogen for minutes
The ALPHA antiatom trap consists of a transverse octupole magnet and two short solenoid or “mirror” coils.
