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Publications du LPNHE |  |
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Publications du LPNHE | |
| HAL : in2p3-00086139, version 1 |
| arXiv : hep-ph/0002056 |
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| Eighth International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, Zuoz : Switzerland |
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| How precisely can we determine the pion-nucleon coupling constant from the isovector GMO sum rule? |
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| B. Loiseau1T. E. O. EricsonA. W. Thomas |
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| (1999) |
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| The isovector GMO sum rule for zero energy forward pion-nucleon scattering is critically studied to obtain the charged pion-nucleon coupling constant using the precise negatively charged pion-proton and pion-deuteron scattering lengths deduced recently from pionic atom experiments. This direct determination leads to a pseudoscalar charged pion-nucleon coupling constant of 14.23 +- 0.09 (statistic) +- 0.17 (systematic). We obtain also accurate values for the pion-nucleon scattering lengths. |
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| 1 : | LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies |
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| Thème(s) | : | Physique/Physique des Hautes Energies - Phénoménologie Physique/Physique Nucléaire Théorique |
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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/hep-ph/0002056 |
| in2p3-00086139, version 1 | |
| http://hal.in2p3.fr/in2p3-00086139 | |
| oai:hal.in2p3.fr:in2p3-00086139 | |
| Contributeur : Dominique Girod | |
| Soumis le : Mardi 18 Juillet 2006, 10:09:27 | |
| Dernière modification le : Mardi 18 Juillet 2006, 10:10:42 | |
