A lattice QCD calculation finds strong B B* attraction in the Zb channel and, under an assumed potential, predicts a near-threshold virtual state and a deep bound state.
Investigation of $B\bar B$ four-quark systems using lattice QCD
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abstract
We investigate $B \bar B$ systems by computing potentials of two static quarks in the presence of two quarks of finite mass using lattice QCD. By solving the Schr\"odinger equation we check whether these potentials are sufficiently attractive to host bound states. Particular focus is put on the experimentally most promising bottomonium-like tetraquark candidate $Z_b^\pm$ with quantum numbers $I(J^P)=1(1^+)$.
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Zb tetraquark channel and $B\bar B^*$ interaction from lattice QCD
A lattice QCD calculation finds strong B B* attraction in the Zb channel and, under an assumed potential, predicts a near-threshold virtual state and a deep bound state.