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CERN physicists figured out how to study antimatter by cooling it with a laser

CERN physicists figured out how to study antimatter by cooling it with a laser My next dream is to make a fountain of anti-atoms by tossing the laser-cooled antimatter into free space on March 31, 2021, 17:05 In context: Antimatter on the atomic scale is identical to normal matter. The difference is that it has an opposite charge. Therefore when the two meet, they annihilate each other. It is difficult to produce and even harder to analyze because of this property. Researchers in CERN s ALPHA (Antihydrogen Laser Physics Apparatus) at the University of British Columbia have discovered a way to lower antimatter s temperature to near absolute zero using a laser. This breakthrough will make it easier for physicists to study the volatile material. Cooling antihydrogen atoms to almost zero Kelvin slows them down enough that scientists can take more precise measurements and perform experiments with them.

A new discovery can explain why the universe has less antimatter than matter

A new discovery can explain why the universe has less antimatter than matter Studying the world on the smallest scale is our best chance to be able to understand what we see on the largest scale. There is nearly no antimatter left in the universe. | Hubble via Twitter It is one of the greatest puzzles in physics. All the particles that make up the matter around us, such electrons and protons, have antimatter versions which are nearly identical, but with mirrored properties such as the opposite electric charge. When an antimatter and a matter particle meet, they annihilate in a flash of energy.

CERN: discovery sheds light on the great mystery of why the universe has less antimatter than matter

It’s one of the greatest puzzles in physics. All the particles that make up the matter around us, such electrons and protons, have antimatter versions which are nearly identical, but with mirrored properties such as the opposite electric charge. When an antimatter and a matter particle meet, they annihilate in a flash of energy. If antimatter and matter are truly identical but mirrored copies of each other, they should have been produced in equal amounts in the Big Bang. The problem is that would have made it all annihilate. But today, there’s nearly no antimatter left in the universe – it appears only in some radioactive decays and in a small fraction of cosmic rays. So what happened to it? Using the LHCb experiment at CERN to study the difference between matter and antimatter, we have discovered a new way that this difference can appear.

Discovery sheds light on the great mystery of why the universe has less antimatter than matter

Discovery sheds light on the great mystery of why the universe has less antimatter than matter
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