Spectroscopy and stability of meson–antimeson tetraquarks using a 3D pion-exchange potential
Year: 2026
Type: article
Abstract: In this work, we investigate the spectroscopy and decay properties of neutral tetraquark systems modeled as loosely bound $$\text {meson}-\text {antimeson}$$ meson - antimeson pairs (e.g., $$D\bar{D}^*$$ D D ¯ ∗ , $$D^*\bar{D}^*$$ D ∗ D ¯ ∗ , $$B\bar{B}^*$$ B B ¯ ∗ , and $$B^*\bar{B}^*$$ 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 $$E_B \approx 45~\textrm{MeV}$$ E B ≈ 45 MeV for $$D\bar{D}^*$$ D D ¯ ∗ with $$J^{PC}=1^{++}$$ J PC = 1 + + , $$E_B \approx 60~\textrm{MeV}$$ E B ≈ 60 MeV
Source: The European Physical Journal C
Author: N. Tazimi
Institution: University of Kashan
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7154209943