A holographic model predicts double-heavy tetraquarks as Efimov-like bound states of a heavy meson and a sphaleron in the Sakai-Sugimoto model.
Heavy baryons emerge by binding a 5-dimensional (0 −, 1−) spin-1 multiplet to the flavored instanton in bulk
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Holographic tetraquarks and the newly observed $T_{cc}^{+}$ at LHCb
A holographic model predicts double-heavy tetraquarks as Efimov-like bound states of a heavy meson and a sphaleron in the Sakai-Sugimoto model.