3 papers
hep-ph2026
Heavy and heavy-light mesons with arbitrary spin and parity in the Covariant Spectator Theory
Alfred Stadler, Elmar P. Biernat
This work generalizes the one-channel Covariant Spectator Theory (CST) formalism to describe quark-antiquark mesons of arbitrary spin-parity . We also improve the quark-antiqu…
nucl-th2026
Heavy and heavy-light tensor and axial-tensor mesons in the Covariant Spectator Theory
Elmar P. Biernat, Alfred Stadler
We present the first calculation of tensor and axial-tensor mesons with total spin within the Covariant Spectator Theory. We employ a refined quark-antiquark interaction k…
hep-ph2025
Simple high-accuracy method for solving bound-state equations with the Cornell potential in momentum space
Alfred Stadler, Elmar P. Biernat, Vasco Valverde
The well-known Cornell quark-antiquark potential in momentum space contains singularities both in its one-gluon-exchange (OGE) and linear confining parts, which prevents a direct u…