Light Scalar Mesons

Details Light Scalar Mesons Light Scalar Mesons

1999-11-17

arxiv.org/abs/hep-ph/9911387v1

AIP Conf.Proc.549:241-244,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures, talk given at Hadron Physics: Effective Theories of Low Energy QCD, Coimbra, Portugal, Sept. 1999

Scientific paper

10.1063/1.1345247

We review how a certain effective chiral Lagrangian approach to pi pi scattering, pi K scattering and eta-prime decay to eta pi pi provides evidence for the existence of light scalars sigma(550) and kappa(900) as well as describing the f0(980) and the a0(980). An attempt to fit these into a nonet suggests that their structure is closer to a dual quark-dual antiquark than to a quark-antiquark. A possible mechanism to explain the next higher mass scalar nonet is also proposed.

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