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

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

1994-04-16

arxiv.org/abs/nucl-th/9404017v1

Phys.Rev.C52:1203-1211,1995

Physics

Nuclear Physics

Nuclear Theory

21 pages of LaTeX, UI-NTH-9402

Scientific paper

10.1103/PhysRevC.52.1203

High partial waves for $pp$ and $np$ 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 $\pi NN$ coupling constants $g_0^2$ for $\pi ^0$ exchange and $g^2_{c}$ for charged $\pi $ exchange can be derived. Results are $g^2_0 = 13.91 \pm 0.13 \pm 0.07$ and $g^2_c = 13.69 \pm 0.15 \pm 0.24$, 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 $d\sigma/d\Omega$.

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