Image Courtesy: Shutterstock Physicists at CERN have produced evidence that some of the smallest atomic nuclei used in high-energy collisions can create quark-gluon plasma, an extreme state of matter believed to have filled the Universe during its first moments. The finding challenges the long-standing assumption that only collisions involving heavy nuclei could produce this primordial […]
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The quarks, the smallest known components of matter, are never seen alone. They are about a billion times smaller than an atom and they only exist enclosed in larger particles such as protons and neutrons, so no one has been able to observe them directly. That impossibility of isolating them has a [...]