Radiative decays of the doubly charmed baryons in chiral perturbation theory

We have systematically investigated the spin-3/2 to spin-1/2 doubly charmed baryon transition magnetic moments to the next-to-next-to-leading order in the heavy baryon chiral perturbation theory (HBChPT). Numerical results of transition magnetic moments and decay widths are presented to the next-to-leading order: mu(Xi cc*++ -> Xi cc++) = -2.35 mu(N), mu(Xi cc*++->Xi cc+) = 1.55 mu(N), mu(Omega cc*+->Omega cc+) = 1.54 mu(N), Gamma(Xi cc*++ -> Xi cc++) = 22.0keV, Gamma(Xi cc*+ -> Xi cc+) = 9.57 keV, Gamma(Omega cc*+->Omega cc+) = 9.45keV. (c) 2017 The Authors. Published by Elsevier B.V.