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The Pion-Nucleon coupling constant from np charge exchange scattering

B. Loiseau·T. E. O. Ericson·J. Rahm·J. Blomgren·N. Olsson
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Abstract

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, $g^2_{π^\pm} = 14.52 \pm 0.26$, in good agreement with the classical value, is higher than those determined in recent nucleon-nucleon partial-wave analyses.

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B. Loiseau, T. E. O. Ericson, J. Rahm, J. Blomgren, N. Olsson. 1998-04-09. The Pion-Nucleon coupling constant from np charge exchange scattering. https://arxiv.org/abs/nucl-th/9804019

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