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HK: Fachverband Physik der Hadronen und Kerne

HK 44: Hadronenstruktur und -spektroskopie

HK 44.4: Vortrag

Dienstag, 5. März 2013, 17:45–18:00, HSZ-403

The KΣ production in pion- and photo-induced reactions up to 2.0 GeV — •Xu Cao, Vitaly Shklyar, and Horst Lenske — Institut für Theoretische Physik, Universität Gießen

A coupled-channel model based on effective Lagrangians is applied to the combined analysis of the (π,γ) N → KΣ reactions up to the center of mass energy 2 GeV. The couplings constants and resonance parameters of the KΣ state are extracted in the calculation. The main resonance contributions to the process come from the S₁₁(1650), D₁₃(1520), D₁₅(1675), P₁₃(1900), P₃₁(1750), D₃₃(1700) and D₃₅(1930) states. The coherent sum of resonances and background contributions is essential to describe the recent photoproduction data obtained by the CLAS, CBELSA, LEPS, and GRAAL groups.