A test of HHCPT using magnetic moments of heavy baryons

Abstract

First non-trivial chiral corrections to the magnetic moments of triplet (T) and sextet ($S^{(*)}$) heavy baryons are presented using Heavy Hadron Chiral Perturbation Theory. The contributions are calculated up to order ${\cal O}(1/(m_Q \Lambda_\chi^2))$ for T-baryons and up to order ${\cal O}(1/\Lambda_\chi^2)$ for $S^{(*)}$-baryons. The renormalization of the chiral loops is discussed and relations among the magnetic moments of different hadrons are provided.