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Testing the doubly charged charm-strange tetraquarks
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 ...
Analysis of the structure of Xi (1690) through its decays
The mass and pole residue of the first orbitally and radially excited Xi state as well as the ground state residue are calculated by means of the two-point QCD sum rules. Using the obtained results for the spectroscopic ...
Structure of the Ξb (6227)- resonance
(American Physical Society, 2018)
We explore the recently observed Ξbð6227Þ− resonance to fix its quantum numbers. To this end, we consider various possible scenarios: It can be considered as either a 1P or 2S excitation of the Ξ−b and Ξ0bð5935Þ ground-state ...
Possible molecular pentaquark states with different spin and quark configurations
(American Physical Society, 2018-09)
We investigate three possible pentaquark candidates, one of which contains a single charm quark and the other two contain triple charm quarks in their substructure. To this end we apply the QCD sum rule method and take ...