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Semileptonic and nonleptonic decays of the axial-vector tetraquark Tbb;(u)over-bar(d)over-bar-

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A family of double-beauty tetraquarks: Axial-vector state Tbb;(us)over-bar-

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Summary: The spectroscopic parameters and decay channels of the axial-vector tetraquark T-bb;(us) over bar(-) are explored using the quantum chromodynamics (QCD) sum rule method. The mass and coupling of this state are calculated and it is stable with respect to strong and electromagnetic decays, dissociating to conventional mesons only via weak transformations. Investigating the dominant semileptonic and nonleptonic decays provides valuable information for experimental investigations of these double-heavy exotic mesons.

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