The Pion-Nucleon coupling constant from np charge exchange scattering
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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.
6 pages, 3 encapsulated figures, epsfig, menu97.cls (included)
6 pages, 3 encapsulated figures, epsfig, menu97.cls (included)
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Consulte el texto completo en el siguiente enlace:
https://arxiv.org/abs/nucl-th/9804019
http://arxiv.org/abs/nucl-th/9804019
Invited Talk at The Seventh International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, Vancouver, British Columbia, Canada, July 28 -August 1, 1997, piN-Newsletter 13, Editors D. Drechsel et al., p. 117, TRIUMF Report TRI-97-1
http://arxiv.org/abs/nucl-th/9804019
Invited Talk at The Seventh International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, Vancouver, British Columbia, Canada, July 28 -August 1, 1997, piN-Newsletter 13, Editors D. Drechsel et al., p. 117, TRIUMF Report TRI-97-1