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Publications du LPNHE |  |
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Publications du LPNHE | |
| HAL : in2p3-00150312, version 1 |
| arXiv : hep-ph/0310082 |
| DOI : 10.1063/1.1799704 |
| Fiche détaillée |  Récupérer au format |
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| Tenth International Conference on Hadron Spectroscopy (Hadron'03), Aschaffenburg : Allemagne |
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| Roy's equations and the pion-pion experimental data |
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| R. KaminskiL. LesniakB. Loiseau1 |
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| (2004) |
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| Roy's equations are used to check if the scalar-isoscalar pion-pion scattering amplitudes fitted to experimental data fulfill crossing symmetry conditions. It is shown that the amplitudes describing the "down-flat'' phase shift solution satisfy crossing symmetry below 1 GeV while the amplitudes fitted to the "up-flat'' data do not. In this way the long standing "up-down" ambiguity in the phenomenological determination of the scalar-isoscalar pion-pion amplitudes has been resolved confirming the independent result of the recent joint analysis of the pi+pi- and pi0pi0 data. |
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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 |
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| pion-pion interactions – pion-proton scattering – meson resonances – meson production – S-parameters – mass spectra |
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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/hep-ph/0310082 |
| in2p3-00150312, version 1 | |
| http://hal.in2p3.fr/in2p3-00150312 | |
| oai:hal.in2p3.fr:in2p3-00150312 | |
| Contributeur : Dominique Girod | |
| Soumis le : Mercredi 30 Mai 2007, 09:49:18 | |
| Dernière modification le : Mercredi 30 Mai 2007, 10:33:06 | |
