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arXiv · 2604.04113

Heavy and heavy-light tensor and axial-tensor mesons in the Covariant Spectator Theory

Elmar P. Biernat·Alfred Stadler
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Abstract

We present the first calculation of tensor and axial-tensor mesons with total spin $J\geq2$ within the Covariant Spectator Theory. We employ a refined quark-antiquark interaction kernel that incorporates the momentum dependence of the strong coupling, replacing the previously used constant term of the kernel. Global least-squares fits to the masses of experimentally established heavy and heavy-light meson states yield an excellent description of the mass spectrum for $J^P=0^\pm, 1^\pm, 2^\pm$, and $3^\pm$ using only eight adjustable parameters.

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Elmar P. Biernat, Alfred Stadler. 2026-04-05. Heavy and heavy-light tensor and axial-tensor mesons in the Covariant Spectator Theory. https://arxiv.org/abs/2604.04113

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