Squeezed Proton (IMAGE)
Caption
A new experiment used high-energy electrons to knock out protons from within a carbon nucleus in search of "squeezed protons". These are protons that are "squeezed" such that their constituent quarks are in a small size configuration, allowing them to slip out of the nucleus without interacting with other protons or neutrons, an effect called color transparency. The new experiment pushed the measurements to the highest speeds ever explored with electrons, but found that the knocked-out protons behave just as ordinary protons.
Credit
DOE's Jefferson Lab
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