Bonn 2010 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 5: Hadronenstruktur und -spektroskopie II
HK 5.10: Vortrag
Montag, 15. März 2010, 18:45–19:00, HG IV
Hyperon production in the reactions pn(p)→ K0 Λ p(p) and pp→ K+ Λ p — •Martin Krapp, Wolfgang Eyrich, Florian Hauenstein, Lukas Kober, Cecilia Pizzolotto, Wolfgang Schroeder, and Andreas Teufel — Universität Erlangen-Nürnberg
The near threshold 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 pp→ K+ Λ p, K0 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, preliminary results and Monte Carlo simulation including Fermi motion. Moreover high statistics data of the reaction pp→ K+ Λ p are discussed. In this context especially the influence of N*-resonances on Dalitz-plots is investigated.
supported by BMBF and FZ Jülich.