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Münster 2002 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 40: Electromagnetic and Hadronic Probes V

HK 40.3: Talk

Thursday, March 14, 2002, 14:45–15:00, D

Study of pηη, pω, pπ0ω and pη final states observed by the CB-ELSA-Experiment — •Jörg Junkersfeld — ISKP, Universität Bonn

One aim of the Crystal-Barrel-Experiment at ELSA is the study of high-mass nucleon resonances in photoproduction off protons in a liquid hydrogen target. The detector system covers a large solid angle (98 % of 4π in the lab sytem) and has a large angular and energy resolution. These features allow the investigation of final states with high photon-multiplicity. Data at photon energies up to 2.8 GeV were taken. From these data 200000 pπ0π0 and 40000 pπ0η events were identified. The covered energy range gives also access to rare final states like pηη, pω, pπ0ω and pη. The search for these final states and the first results will be presented.

Supported by DFG.

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