Hyperon forward spin polarizabilty gamma0
  We present the results of a systematic leading order calculation of hyperon Compton scattering and extract the forward spin polarizability gamma0 of hyperons within the framework of SU(3) heavy baryon chiral perturbation theory (HBChPT). The results obtained for gamma0 in the case of nucleons agree with that of the known results of SU(2) HBChPT when kaon loops are not considered. 
K.B. Vijaya Kumar, Amand Faessler, Thomas Gutsche, Barry R. Holstein,   Valery E. Lyubovitskij
hep-ph