5 papers
The Okubo relation for the baryon magnetic moments and chiral perturbation theory
J. W. Bos, D. Chang, S. C. Lee +1
We analyze the Okubo SU(3) relation among the hyperon magnetic moments in the usual scheme of chiral perturbation theory (ChPT). We classify the one-loop diagrams, including those…
Heavy-baryon chiral perturbation theory and reparametrization invariance
J. W. Bos, D. Chang, S. C. Lee +2
We examine the constraints imposed by reparametrization invariance on heavy-baryon chiral perturbation theory (HBChPT). We study the case of 3 flavors and consider both the strong…
SU(3) breaking and baryon magnetic moments
J. W. Bos, D. Chang, S. C. Lee +2
We show that the magnetic moments of the octet baryons can be fitted to an accuracy of 1.5 percent by a phenomenological Lagrangian in which SU(3) breaking corrections appear only…
Hyperon weak radiative decays in chiral perturbation theory
J. W. Bos, D. Chang, S. C. Lee +2
We investigate the leading-order amplitudes for weak radiative decays of hyperons in chiral perturbation theory. We consistently include contributions from the next-to-leading orde…
Baryon Chiral Perturbation Theory up to Next-to-Leading Order
J. W. Bos, D. W. Chang, S. C. Lee +2
We examine the general lagrangian for baryon chiral perturbation theory with SU(3) flavor symmetry, up to the next-to-leading order. We consider both the strong and the weak intera…