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 ($S^{(\ast )}$) heavy baryons are presented using Heavy Hadron Chiral Perturbation Theory. The contributions are calculated up to order $\mathcal{O}(1/(m_Q{\Lambda }_{\chi }^2))$ for T-baryons and up to order $\mathcal{O}(1/{\Lambda }_{\chi }^2)$ for $S^{(\ast )}$-baryons. The renormalization of the chiral loops is discussed and relations among the magnetic moments of different hadrons are provided.

Comments: Poster presented at Heavy Flavours 8, Southampton, july 1999