Magnetic moments of heavy baryons in the relativistic three-quark model

The magnetic moments of ground state single, double and triple heavy baryons containing charm or bottom quarks are calculated in a relativistic three-quark model, which, in the heavy-quark limit, is consistent with heavy-quark effective theory and heavy hadron chiral perturbation theory. The internal quark structure of baryons is modeled by baryonic three-quark currents with a spin-flavor structure patterned according to standard covariant baryonic wave functions and currents used in QCD sum rule calculations.

Figure 1

Baryon mass operator.

Figure 2

Coupling vertex of baryon, photon and three quarks.

Figure 3

Diagrams contributing to the baryon electromagnetic vertex function: triangle (a), bubble (b) and (c) diagrams.