Document Type

Article

Date

11-17-1999

Language

English

Disciplines

Physics

Description/Abstract

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.

Additional Information

10 pages, 4 figures, talk given at Hadron Physics: Effective Theories of Low Energy QCD, Coimbra, Portugal, Sept. 1999 More information available at http://arxiv.org/abs/hep-ph/9911387

Source

Harvested from Arxiv.org

Included in

Physics Commons

Share

COinS