Bethe-Salpeter equation for doubly heavy baryons in the covariant instantaneous approximation

M. -H. Weng, X. -H. Guo, A. W. Thomas

In the heavy quark limit, a doubly heavy baryon is regarded as composed of a heavy diquark and a light quark. We establish the Bethe-Salpeter (BS) equations for the heavy diquarks…