Half-spin baryons with identicle quarks?

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Half-spin baryons composed of three identical flavored quarks do not exist due to the constraints of quantum mechanics. The Δ- and Δ++ baryons possess a total angular momentum of 3/2, while the spin-1/2 versions of these particles exist in different orbital angular momentum states. The color wave function is antisymmetric, the flavor is symmetric, necessitating a totally symmetric spin configuration. The known Ω states have not been well measured, likely due to their short-lived nature and complex decay processes.

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Do any 1/2 spin baryons exist that are made of three identical (flavored) quarks? I know the Δ-, Δ++ and Ω- have 3/2 spin. If the 1/2 spin versions of these particles can't exist, then why not?
 
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The color wave function is totally antisymmetric, the flavor is totally symmetric, so that the spin has to be totally symmetric.
 
Spin of a composite particle is best identified with the total angular momentum J = L + S, where L and S are the "orbital" and spin angular momentum of the constituents. There are indeed spin 1/2 versions of the ##\Delta## particles, which are in different orbital angular momentum states compared to the lightest ##\Delta##. A list can be found here: http://pdglive.lbl.gov/listing.brl?fsizein=1&exp=Y&group=BXXX020 . The known ##\Omega## states are listed at http://pdglive.lbl.gov/listing.brl?fsizein=1&exp=Y&group=BXXX035 . It doesn't appear that their angular momentum has been well measured. Presumably they are too short-lived, or their decays too dirty to make this easy, but I am no experimentalist.
 
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