Regular Article - Theoretical Physics
Axial-vector and pseudoscalar tetraquarks
Department of Physics, Kocaeli University, 41380, Izmit, Turkey
2 Department of Physics Engineering, Istanbul Medeniyet University, 34700, Istanbul, Turkey
3 Institute for Physical Problems, Baku State University, 1148, Baku, Azerbaijan
4 Department of Physics, University of Tehran, North Karegar Avenue, 14395-547, Tehran, Iran
5 Department of Physics, Doǧuş University, Acibadem-Kadiköy, 34722, Istanbul, Turkey
Accepted: 18 February 2023
Published online: 6 March 2023
Spectroscopic parameters and widths of the fully open-flavor axial-vector and pseudoscalar tetraquarks and with content are calculated by means of the QCD sum rule methods. Masses and current couplings of and are found using two-point sum rule computations performed by taking into account various vacuum condensates up to dimension 10. The full width of the axial-vector state is evaluated by including into analysis S-wave decay modes , , , and . In the case of , we consider S-wave decay , and P-wave processes and . To determine partial widths of these decay modes, we employ the QCD light-cone sum rule method and soft-meson approximation, which are necessary to estimate strong couplings at tetraquark–meson–meson vertices , etc. Our predictions for the mass and width of the tetraquark , as well as results and for the same parameters of may be useful in future experimental studies of multiquark hadrons.
© The Author(s) 2023
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