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Resonance X(5568) as an exotic axial-vector state
The mass and meson-current coupling constant of the resonance X(5568), as well as the width of the decay X(5568) -> B-s*pi are calculated by modeling the exotic X(5568) resonance as a diquark-antidiquark state X- b = ...
Mass and residue of Lambda(1405) as hybrid and excited ordinary baryon
The nature of the Lambda(1405) has been a puzzle for decades, whether it is a standard three-quark baryon, a hybrid baryon or a baryon-meson molecule. More information on the decay channels of this particle and its strong, ...
Probing an axial-vector tetraquark Zs via its semileptonic decay Zs → X(4274) l¯ νl
The semileptonic decays of the open charm-bottom axial-vector tetraquark Zs= [cs] [b¯ s¯] to X(4274) l¯ νl , l= e, μ, τ are explored by means of the QCD three-point sum rule method. Both Zs and X(4274) = [cs] [c¯ s¯] are ...
Weak decays of the axial-vector tetraquark Tbb;(u)over-bar(d)over-bar(-)
(American Physical Society, 2019-02)
The weak decays of the axial-vector tetraquark T-bb;(u) over bar(d) over bar(-) to the scalar state Z(bc;(u) over bar(d) over bar)(0) are investigated using the QCD three-point sum rule approach. In order to explore the ...
The doubly charmed pseudoscalar tetraquarks T-cc(;(s)over-bar(s)over-bar)++ and T-cc(;(d)over-bar<)(s()over bar)>(++)
The mass and coupling of the doubly charmed J(P) = 0(-) diquark-antidiquark states T-cc (s) over bar(s) over bar(++) and T-cc;(d) over bar<(s)over (++)(bar)(>) that bear two units of the electric charge are calculated by ...