We report progress on calculations of the heavy-light baryons $\Sigma_c$ and $\Lambda_c$ and their excitations with $J^P=1/2^+$ and $3/2^+$ using functional methods. The three-quark Faddeev equations are reduced to two-body equations by employing a covariant quark-diquark approach. The interaction amounts to a quark exchange between quarks and effective diquarks, and the ingredients are...
We provide general formulas for the potentials at next-to-leading order in the Born-Oppenheimer effective field theory. We apply them to douby heavy baryons and obtain model independent formulas for the hyperfine splittings. Using available lattice data for the static potentials we obtain the spin average spectrum for doubly charmed and doubly bottomed baryons. We also obtain detailed results...
Traditional experimental approaches, such as scattering and hypernuclei measurements, are insufficient to provide stringent constraints to
the theoretical modeling of the interaction between strange hadrons and hence questions on the existence and nature of predicted exotic bound states or resonances are still open.
In the baryon-baryon interaction, this is indeed the case for the...
