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Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 80: Hadron Structure and Spectroscopy I

HK 80.3: Talk

Friday, March 20, 2009, 11:30–11:45, H-ZO 20

Hyperon production in the reactions ppK+ Λ p and pn(p)→ K0 Λ p(p) — •Martin Krapp, Wolfgang Eyrich, Cecilia Pizzolotto, Wolfgang Schroeder, and Andreas Teufel — Universität Erlangen-Nürnberg

The near threashold production of hyperons by using a liquid hydrogen target is one of the main topics studied at the time-of-flight spectrometer COSY-TOF. Up to now the reactions ppK+ Λ pK0 Σ+ p and K+ Σ0 p have been investigated in detail and led to an essential information gain about the reaction mechanism. In order to achieve more complete information about hyperon production near threshold in nucleon-nucleon reactions, the investigation has been extended to pn reactions by using a liquid deuterium target. The current status of the analysis of the reaction channel pn(p)→ K0 Λ p(p) will be presented, as well as reconstruction techniques and first results. Moreover the data of the reaction ppK+ Λ p, which are now available with high statistical precision, are discussed. In this context especially the influence of N*-resonances on Dalitz-plots is investigated.

supported by BMBF and FZ Jülich.

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