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Seventh International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, Vancouver : Canada (1997)
The Pion-Nucleon coupling constant from np charge exchange scattering
B. Loiseau1, T. E. O. Ericson, J. Rahm, J. Blomgren, N. Olsson

A novel extrapolation method has been used to deduce the charged Pion-Nucleon coupling constant from backward $np$ differential scattering cross sections. We applied it to new measurements performed at 162 MeV at the The Svedberg Laboratory in Uppsala. In the angular range $150^\circ-180^\circ$, the carefully normalized data are steeper than those of most previous measurements. The extracted value, $g^2_{\pi^\pm} = 14.52 \pm 0.26$, in good agreement with the classical value, is higher than those determined in recent nucleon-nucleon partial-wave analyses.
1 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
Physique/Physique Nucléaire Théorique
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