$NNK$ and $ΛΛK$ Amplitudes in Chiral Perturbation Theory

Details $NNK$ and $ΛΛK$ Amplitudes in Chiral Perturbation Theory $NNK$ and $ΛΛK$ Amplitudes in Chiral Perturbation Theory

1997-12-08

arxiv.org/abs/nucl-th/9712031v1

Nucl.Phys.A639:325-328,1998

Physics

Nuclear Physics

Nuclear Theory

4 pages, Talk given at the International Conference on Hypernuclear and Strange Particle Physics (HYP97), Brookhaven Nat'l Lab

Scientific paper

10.1016/S0375-9474(98)00290-5

We explore the S-wave and P-wave amplitudes for $NNK$ and $\Lambda\Lambda K$ interactions using chiral perturbation theory to ${\cal O}(m_s\log m_s)$. In contrast to the large corrections found in P-wave amplitudes in the nonleptonic decay of octet baryons, the $NNK$ amplitudes receive only small corrections to their tree-level values. The uncertainty in the $\Lambda\Lambda K$ amplitudes is found to be large.

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