https://doi.org/10.1140/epjc/s10052-023-11339-8
Regular Article - Theoretical Physics
Axial-vector and pseudoscalar tetraquarks 
1
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
Received:
21
September
2022
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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