Spectrum of 8₂ₒ 8ₐ ₐ^ systems with quantum numbers J^P=0^ and 1^

Inspired by the recent experimental progress on the T₂ₒ₀ᵃ (2900) ^0/++, the fully open tetraquark spectrum with the configuration of 8₂ₒ 8ₐ ₐ^ is systematically investigated by the QCD sum rules. In this article, we concentrate on the quantum numbers J^P=0^+/0^-/1^+/1^-. Firstly, we construct four scalar currents (J^P=0^+) in the form of 8₂ₒ 8ₔ₃ type tetraquark structure and perform the analysis of the QCD sum rules, where we consider the leading order contributions up to dimension 11 in the operator product expansion and retain contributions linear in the strange quark mass mₛ. Our results, M₀^+A = 2. 91-₀. ₂₀^+0. 20~GeV and M₀^+C = 2. 98-₀. ₂₁^+0. 20~GeV, are consistent with the experimentally discovered T₂ₒ₀ᵃ (2900) ^++ within error margins. Thus, our calculation supports classifying T₂ₒ₀ᵃ (2900) ^++ as a tetraquark state with the 8₂ₒ 8ₔ ₃ color configuration. Moreover, on the basis of JP=0^+, we also study tetraquark states with quantum numbers JP=0^-, 1^+, and 1^-, predicting two new hadronic states awaiting experimental verification for each quantum number. Their masses are as follows: M₀^-^A=3. 45-₀. ₁₀^+0. 12~GeV, M₀^-^D=3. 20-₀. ₁₉^+0. 17~GeV, M₁^+^A=2. 95-₀. ₁₉^+0. 19~GeV, M₁^+^C=2. 95-₀. ₁₉^{+0. 19}~GeV, M₁^-^A=3. 23-₀. ₁₀^{+0. 11}~GeV and M₁^-^D=3. 23-₀. ₁₁^{+0. 09}~GeV. With advances in experimental techniques and accumulation of new data, these predicted results are hoped to be confirmed in future experiments.