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HK: Fachverband Physik der Hadronen und Kerne

HK 1: Hadronenstruktur und -spektroskopie

HK 1.6: Talk

Monday, March 17, 2014, 15:45–16:00, HZ 1+2

Analysis of π N → 2π N reactions within the Giessen coupled-channel model — •Vitaly Shklyar, Horst Lenske und Ulrich Mosel — Institut für Theoretische Physik, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen

An unitary coupled-channel Lagrangian model is developed for simultaneous analysis of pion- and photon-induced reactions in the resonance energy region. The π N, ρ N, πΔ, σ N, η N, ω N, KΛ, KΣ final states are treated on the same basis. The three-body unitarity is approximately maintained up to interference between different isobar channels in Bethe-Salpeter equation. Results of the analysis of the π ⁻ p →π⁰ π⁰ n reaction in the first resonance energy region are presented and discussed.

Supported by DFG SFB/TR 16, project B7 and DFG grant Le439/7.