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    pi-NN Coupling Constants from NN Elastic Data between 210 and 800 Mev

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    High partial waves for pppp and npnp elastic scattering are examined critically from 210 to 800 MeV. Non-OPE contributions are compared with predictions from theory. There are some discrepancies, but sufficient agreement that values of the πNN\pi NN coupling constants g02g_0^2 for π0\pi ^0 exchange and gc2g^2_{c} for charged π\pi exchange can be derived. Results are g02=13.91±0.13±0.07g^2_0 = 13.91 \pm 0.13 \pm 0.07 and gc2=13.69±0.15±0.24g^2_c = 13.69 \pm 0.15 \pm 0.24, where the first error is statistical and the second is an estimate of the likely systematic error, arising mostly from uncertainties in the normalisation of total cross sections and dσ/dΩd\sigma/d\Omega.Comment: 21 pages of LaTeX, UI-NTH-940
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