The $J^P=\frac{1}{2}^+$ baryon octet consists of the nucleons (proton $p$ and neutron $n$) and the hyperons ($\Sigma^+$, $\Sigma^0$, $\Sigma^-$, $\Xi^0$, $\Xi^-$, and $\Lambda$). Each baryon is made up of three quarks. The quark content for each is as follows:
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