Is this some sort of issue with color or another quantity that needs to be conserved?
Why do you think this would make protons decay?
(uuu) is heavier than the lightest (uud) baryon. The reason comes from quantum mechanics: The total wave function has to be antisymmetric under the exchange of up-quarks. (uud) can have spin 1/2, but (uuu) cannot. A larger spin leads to a larger mass.
I suppose that makes sense, thanks for the reply!
I naively assumed that baryon would be the lightest baryon, lighter than a proton, so I assumed it would eventually decay to the lowest mass. The other reply explained why this would not be the case.
Thanks for the reply!
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