Abstract
The spectroscopic parameters and partial decay widths of the light mesons a0(980) and K0⁎(800) are calculated by treating them as scalar diquark–antidiquark states. The masses and couplings of the mesons are found in the framework of QCD two-point sum rule approach. The widths of the decay channels a0(980)→ηπ and a0(980)→KK¯, and K0⁎(800)→K+π− and K0⁎(800)→K0π0 are evaluated using QCD sum rules on the light-cone and technical tools of the soft meson approximation. Our results for the mass of the mesons ma0=991−27+29MeV and mK⁎=767+38−29MeV, as well as their total width Γa0=62.01±14.37MeV and ΓK0⁎=401.1±87.1MeV are compared with last experimental data.
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