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

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Peláez Sagredo, José Ramón (2007) Dispersive chiral approach to meson-meson dynamics: Spectroscopy results for light scalars and precision studies. In Quark Confinement and the Hadron Spectrum VII. AIP Conference Proceedings (892). Amer Inst Physics, pp. 72-78. ISBN 978-0-7354-0396-3

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Official URL: http://dx.doi.org/10.1063/1.2714349

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Abstract

Dispersive approaches provide model independent description of meson-meson scattering. We first review here the use of dispersion relations to obtain a model independent unitarization of Chiral Perturbation Theory amplitudes, that establish the existence of light scalar mesons and whose leading 1/N_c behavior suggest they ahve a non q q̅ dominant component. We also review the forward dispersion relation checks on conflicting experimental data and the resulting very precise pi pi scattering scattering amplitudes.

Item Type:	Book Section
Additional Information:	ISSN: 0094-243X ©2007 Amer Inst Physics. Conference on Quark Confinement and the Hadron Spectrum (7. 2006. Ponta Delgada, Portugal). I thank the organization staff, and particularly E. Ribeiro, for creating such a nice working environment and offering me the chance to participate in this wonderful Conference.
Uncontrolled Keywords:	Perturbation-theory; π π; Scattering; States
Subjects:	Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics
ID Code:	35327
Deposited On:	27 Jan 2016 19:51
Last Modified:	10 Dec 2018 15:09

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