T_cc+ is assigned to a compact color-sextet tetraquark by a Born-Oppenheimer quark model, which also predicts stable doubly heavy tetraquarks.
This result implies that it is difficult for the tetraquark cc¯u¯dsystem to form a bound state
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Hydrogen-like structures in the strong interaction
T_cc+ is assigned to a compact color-sextet tetraquark by a Born-Oppenheimer quark model, which also predicts stable doubly heavy tetraquarks.