Münster 2002 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 12: Poster Session: Electromagentic and Hadronic Probes

HK 12.21: Poster

Tuesday, March 12, 2002, 10:30–12:45, Foyer Chemie

Luminosity determination at COSY-11 using the pd elastic scattering — •S. Steltenkamp — Institut für Kernphysik, Universität Münster, Germany

Measurements on the near-threshold η and η^′ meson production in the reaction channel pd→ ³He X have been performed at the internal beam experiment COSY-11 [1,2]. To extract total and differential cross sections, the proton-deuteron elastic scattering has been measured simultaneously as reference reaction for normalization purposes. Close to the η and η^′ meson production thresholds (p_thr.,η = 1.570 GeV/c, p_thr.,η^′ = 2.434 GeV/c) the COSY-11 facility allows for an identification and momentum reconstruction of elastically scattered protons using a set of two drift chambers and a scintillation wall. Additionally, a granulated silicon pad detector enables to detect the corresponding deuterons in coincidence.

The experimental method will be discussed and recent results will be presented.

[1] H.-H. Adam, diploma thesis, Universität Münster, Germany (2000).

[2] I. Geck, Staatsexamensarbeit, Universität Münster, Germany (2001).