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[en] Recently we have developed meson-exchange models for ππ and πη scattering and we have used them for investigating the nature of the meson resonances f0(980) and a0(980). These models are based on an effective meson Lagrangian utilising the symmetries of the QCD-Lagrangian as guideline. The resulting potential for meson-meson scattering contains t-channel vector-meson exchanges (ρ, K*, ω, φ) as well as s-channel pole diagrams (ρ, element of (1400), f2(1270)) and is iterated in a three-dimensional scattering equation of Blankenbecler-Sugar type. (orig.)
Source
Buescher, M.; Kleber, V. (eds.); Forschungszentrum Juelich GmbH (Germany). Inst. fuer Kernphysik; 309 p; ISSN 0944-2952; 
; Jul 2000; p. 113-140; Workshop on a0 physics with ANKE; Moscow (Russian Federation); 13-14 Jul 2000; Available from TIB Hannover: RA 831(3801)
; Jul 2000; p. 113-140; Workshop on a0 physics with ANKE; Moscow (Russian Federation); 13-14 Jul 2000; Available from TIB Hannover: RA 831(3801)