Reconciling the Light Scalar Mesons with Breit-Wigner Resonances as well as the Quark Model

Resonances appearing in hadronic scattering processes are described by a two-phase model. In the one phase, scattering products are observed, whereas the other phase describes confinement. A so-called ``Resonance-Spectrum Expansion'' is derived, containing expressions that resemble Breit-W...

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Bibliographic Details
Published in:arXiv.org 2003-04
Main Authors: Eef van Beveren, Rupp, George
Format: Article
Language:English
Subjects:
Mesons
Quark models
Resonance scattering
Online Access:Get full text
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Summary:Resonances appearing in hadronic scattering processes are described by a two-phase model. In the one phase, scattering products are observed, whereas the other phase describes confinement. A so-called ``Resonance-Spectrum Expansion'' is derived, containing expressions that resemble Breit-Wigner formulae. This method also provides a straightforward explanation for the origin of the light scalar mesons without requiring extra degrees of freedom.
ISSN:2331-8422