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Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 39: Hadronenstruktur und -spektroskopie

HK 39.9: Talk

Thursday, March 22, 2012, 18:45–19:00, RW 2

Study of Σ+ hyperon production with the upgraded COSY-TOF detector — •Roman Dzhygadlo, Albrecht Gillitzer, Eduard Roderburg, and James Ritman — Forschungszentrum Jülich, Germany

Within the COSY-TOF hyperon production studies the reaction pppKsΣ+ was measured. The reaction products of the interaction of a 2.95 GeV/c polarized proton beam with a liquid hydrogen target were detected by the COSY-TOF detector. The azimuthal symmetry and large acceptance of the detector as well as an excellent tracking capability introduced by silicon quirl and straw tube trackers allows measuring the complete pKsΣ+ final state distribution. A new event reconstruction algorithm was developed to gain maximum reconstruction efficiency. All steps were controlled by Monte Carlo simulations.

The results including the tree-body final state distribution and polarization observables (P,AN,DNN) will be presented.

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