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The Weak $ΛΛK^0$ Interaction

Martin J. Savage·Roxanne P. Springer
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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 $ΛΛ\toΛn$ 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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Martin J. Savage, Roxanne P. Springer. 1997-08-27. The Weak $ΛΛK^0$ Interaction. https://doi.org/10.1103/physrevc.57.1478

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