At the heart of this puzzle lies light-by-light scattering, a quantum process where particles of light, or photons, briefly transform into other particles. Ordinarily, light waves pass through each ...
About 80% of the universe's mass is thought to consist of dark matter. Yet, little is known about the composition and structure of the particles that make up dark matter, presenting physicists with ...
The magnetic moment of the muon—a tiny property of a tiny particle—has long puzzled physicists. Experiments and theory haven't quite matched up, leaving open the thrilling possibility of discovering ...
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