Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
A Lambda* resonance model for the eta - Lambda interaction near threshold is proposed. By assuming the Lambda* (1670) excitation dominates in the K- p --> eta Lambda reaction near threshold, the corresponding eta production cross section and the s-wave eta - Lambda scattering length are calculated. The obtained production cross section is consistent with the available experimental data, which indicates that the Lambda* (1670) excitation is dominant in the production reaction near threshold. The eta - Lambda interaction is found to be attractive.