Roy's equations and the pion-pion experimental data
| Autor: | Kaminski, R., Lesniak, L., Loiseau, B. |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Herbert Orth, Helmut Koch, Eberhard Klempt |
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
pion-pion interactions
13.75.Lb 11.80.-m 13.85.Ni Nuclear Theory FOS: Physical sciences mass spectra High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) meson production [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] meson resonances High Energy Physics::Experiment S-parameters pion-proton scattering Nuclear Experiment |
| Zdroj: | AIP Conference Proceedings Tenth International Conference on Hadron Spectroscopy (Hadron'03) Tenth International Conference on Hadron Spectroscopy (Hadron'03), Aug 2003, Aschaffenburg, Germany. pp.195-199, ⟨10.1063/1.1799704⟩ |
| DOI: | 10.1063/1.1799704⟩ |
| Popis: | 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. 6 pages, 2 figures, talk given at Tenth International Conference on Hadron Spectroscopy (Hadron'03), Aschaffenburg, Germany, August 31 - September 6 2003 |
| Databáze: | OpenAIRE |
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