I'm a little confused about what is actually meant by the J(adsbygoogle = window.adsbygoogle || []).push({}); ^{P}= 1/2^{+}octet.

I'm pretty sure it means the particles must have spin 1/2 in the ground state (l=0) and an even parity but what I'm confused over is the absence of an sss, uuu or ddd state. I understand that this would give I_{3}= 3/2 but why couldn't we have this but maintain spin 1/2?

I'm sure I'm just missing something obvious here, thanks a lot in advance for any help :D

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# Quark Model Spectroscopic Notation

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