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Z tetraquark channel from lattice QCD and Born-Oppenheimer approximation

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Prelovsek, S. ; Bahtiyar, H. ; Petković, J.
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Date of publication of this fulltext: 01 Apr 2021 13:40


Two Zbhadrons with exotic quark structure ¯bb¯duwere discovered by Belle experiment. We present a lattice QCD study of the ¯bb¯dusystem in the approximation of static bquarks, where the total spin of heavy quarks is fixed to one. The energies of eigenstates are determined as a function of the separation rbetween band ¯ b. The lower eigenstates are related to a bottomonium and a pion. The ...


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