Pseudoscalar and vector toponia in a Dyson--Schwinger--Bethe--Salpeter framework

H. -R. Zhang, Z. -F. Cui, J. Segovia

We study the pseudoscalar ($J^{PC}=0^{-+}$) and vector ($1^{--}$) top--antitop (toponium) systems within the rainbow--ladder truncation of the Dyson--Schwinger and Bethe--Salpeter…