Dispersive chiral approach to Meson-meson dynamics: Spectroscopy results for light scalars and precision studies | Zendy

J. R. Peláez | Zendy

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Dispersive chiral approach to Meson-meson dynamics: Spectroscopy results for light scalars and precision studies

Author(s) -

J. R. Peláez

Publication year - 2007

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.2714349

Subject(s) - meson , physics , chiral perturbation theory , dispersion relation , particle physics , scalar (mathematics) , scalar meson , scattering , amplitude , eta meson , scattering amplitude , quantum electrodynamics , spectroscopy , quantum mechanics , pion , mathematics , geometry

Dispersive approaches provide model independent description of meson-mesonscattering. We first review here the use of dispersion relations to obtain amodel independent unitarization of Chiral Perturbation Theory amplitudes, thatestablish the existence of light scalar mesons and whose leading 1/N_c behaviorsuggest they ahve a non q-qbar dominant component. We also review the forwarddispersion relation checks on conflicting experimental data and the resultingvery precise pion-pion scattering scattering amplitudes.Comment: 8 pages. Invited Plenary talk at the Conference ``Quark Confinement and the Hadron SpectrumVII''. 2-7th Sept. 2006. Ponta Delgada, Azores Islands. Portuga

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