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| HAL : in2p3-00192255, version 1 |
| arXiv : hep-ph/0207063 |
| Fiche détaillée |  Récupérer au format |
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| Meson 2002: 7th International Workshop on Production, Properties and Interaction of Mesons, Cracow : Pologne (2002) |
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| Elimination of Ambiguities in $\pi\pi$ Amplitudes Using Roy's Equations |
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| R. KaminskiL. LesniakB. Loiseau1 |
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| (2002) |
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| Roy's equations are used to check if scalar-isoscalar pi-pi amplitudes fitted to the ``up-flat'' and ``down-flat'' phase shift solutions fulfill crossing symmetry below 1 GeV. It is shown that the amplitude fitted to the ``down-flat'' solution satisfies crossing symmetry while the ``up-flat'' one does not. In such a way the ``up-down'' ambiguity in the scalar-isoscalar phase shifts is resolved in favour of the ``down-flat'' solution. |
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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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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/hep-ph/0207063 |
| in2p3-00192255, version 1 | |
| http://hal.in2p3.fr/in2p3-00192255 | |
| oai:hal.in2p3.fr:in2p3-00192255 | |
| Contributeur : Dominique Girod | |
| Soumis le : Mardi 27 Novembre 2007, 13:50:23 | |
| Dernière modification le : Mardi 27 Novembre 2007, 14:24:08 | |
