The ASACUSA experiment. More photos.

In a paper published today in the journal Nature, the Japanese-European ASACUSA experiment at CERN reported a new measurement of the antiproton’s mass accurate to about one part in a billion. Precision measurements of the antiproton mass provide an important way to investigate nature’s apparent preference for matter over antimatter.

More information:

• Press Release: CERN experiment weighs antimatter with unprecedented accuracy
• Video: CERN News ASACUSA Experiment
• More photos.