A constituent quark model predicts masses of 1.9, 4.2, and 6.6 GeV for light, charmonium-like, and fully-charm 1^{-+} tetraquarks along with decay ratios for specific two-body channels and rules out η1(1855) as a compact tetraquark.
All possible configurations are as follows: ψc [2]ψo [2]ψs [11]ψf [2], ψ c [2]ψo [2]ψs [2]ψf [11], ψc [2]ψo [11]ψs [11]ψf [11], ψ c [2]ψo [11]ψs [2]ψf
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Systematic study of exotic $1^{-+}$ tetraquark spectroscopy
A constituent quark model predicts masses of 1.9, 4.2, and 6.6 GeV for light, charmonium-like, and fully-charm 1^{-+} tetraquarks along with decay ratios for specific two-body channels and rules out η1(1855) as a compact tetraquark.