880 research outputs found
Quark Confinement for Multi-Quark Systems -- Application to Fully-Charmed Tetraquarks
A new color basis system and confinement mechanism for multi-quark systems
are proposed according to the string-type picture of QCD. The color string
configurations in the strong coupling QCD are implemented in the set of color
basis states. The extended color Hilbert space for systems
includes a ''hidden color'' state, which mixes with two-meson states , This mixing effect leads to an attractive potential sufficient to
form a bound state. We apply a realistic Hamiltonian model with the new scheme
to fully charmed tetraquark states, , and find a bound and two
resonant states, which could potentially correspond to the
tetraquark candidates recently observed in experiments.Comment: 6 pages, 3 figure
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