Abstract In this work, we investigate the spectroscopy and decay properties of neutral tetraquark systems modeled as loosely bound meson- antimeson meson - antimeson pairs (e. g. , DD^* D D ¯ ∗, D^*D^* D ∗ D ¯ ∗, BB^* B B ¯ ∗, and B^*B^* B ∗ B ¯ ∗). All our calculations are strictly performed for the color-neutral meson–antimeson configurations. The homogeneous Lippmann–Schwinger equation is solved using a one-pion-exchange potential (OPEP) that incorporates explicit spin-dependent components. The configuration-space kernel is Fourier transformed and projected into the helicity basis, enabling a transparent treatment of spin structures. We focus on PV and VV systems near open-charm and open-bottom thresholds and extract binding energies, wave functions, and partial decay widths within a single-channel approximation that neglects coupled-channel effects. For representative channels, we obtain EB 45~MeV E B ≈ 45 MeV for DD^* D D ¯ ∗ with J^PC=1^++ J PC = 1 + +, EB 60~MeV E B ≈ 60 MeV
N Tazimi (Tue,) studied this question.