Abstract.
The spin and isospin structure of the amplitudes and observables for K+Λ production in nucleon-nucleon collisions in the near-threshold region is analysed. Five experiments are required in order to isolate the amplitudes, up to an overall phase and two discrete ambiguities, in a model-independent way. It is shown that, with reasonable values for the relative strengths of the π and ρ terms in a meson-exchange model, one expects production on the neutron to be significantly stronger than that on the proton. Negative values of the spin-transfer coefficient DNN are also predicted due to π-ρ interference.
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A. Molinari
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Fäldt, G., Wilkin, C. Spin and isospin effects in the NN → NKΛ reaction near threshold. Eur. Phys. J. A 24, 431–435 (2005). https://doi.org/10.1140/epja/i2004-10207-5
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DOI: https://doi.org/10.1140/epja/i2004-10207-5