The Weak ΛΛK0 Interaction
Martin J. Savage, Roxanne P. Springer
Abstract
We calculate the leading contribution to the weak ΛΛK coupling in heavy baryon chiral perturbation theory, including the SU(3) breaking terms arising at one-loop. This coupling gives the leading one-boson exchange amplitude for the process ΛΛΛn and is an important component in understanding the decay of ΛΛ-hypernuclei. We find the S-wave and P-wave amplitudes to be stable under one-loop corrections, but the associated errors become large. We discuss the theoretical errors and potential effects of higher order terms.
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