Testing the doubly charged charm-strange tetraquarks


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AGAEV S. S. , Azizi K., Sundu H.

EUROPEAN PHYSICAL JOURNAL C, cilt.78, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

The spectroscopic parameters and decay channels of the doubly charged scalar, pseudoscalar and axial-vector charm-strange tetraquarks Z((c) over bars) = [sd][(uc) over bar] are explored within framework of the QCD sum rule method. The masses and current couplings of these diquark-antidiquark states are calculated by means of two-point correlation functions and taking into account the vacuum condensates up to eight dimensions. To compute the strong couplings of Z((c) over bars) states with D, D-s, D*, D*(s), D-s1(2460), D*(s0)(2317), pi and K mesons we use QCD light-cone sum rules and evaluate width of their S- and P-wave decays to a pair of negatively charged conventional mesons: For the scalar state Z((c) over bars) -> D-s pi, DK, D-s1(2460)pi, for the pseudoscalar state Z((c) over bars) -> D*(s)pi, D* K, D*(s0)(2317)pi, and for the axial-vector state Z((c) over bars) -> D*(s)pi, D* K, D-s1(2460)pi decays are investigated. Obtained predictions for the spectroscopic parameters and decay widths of the Z((c) over bars) tetraquarks may be useful for experimental investigations of the doubly charged exotic hadrons.