Magnetic Moments of Heavy Baryons

Abstract

First non-trivial chiral corrections to the magnetic moments of triplet (T) and sextet (S^(*)) heavy baryons are calculated using Heavy Hadron Chiral Perturbation Theory. Since magnetic moments of the T-hadrons vanish in the limit of infinite heavy quark mass (m_Q->infinity), these corrections occur at order O(1/(m_Q Λ_χ^2)) for T-baryons while for S^(*)-baryons they are of order O(1/Λ_χ^2). The renormalization of the chiral loops is discussed and relations among the magnetic moments of different hadrons are provided. Previous results for T-baryons are revised.

11 Latex pages, 2 figures, to be published in Phys.Rev.D