München 2006 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 16: Elektromagnetische und Hadronische Sonden
HK 16.3: Talk
Tuesday, March 21, 2006, 14:30–14:45, G
Study of the η meson production in the d→+d→4He+η reaction using the polarised beam — •Mariola Lesiak1,2 and Hartmut Machner1 — 1Institut für Kernphysik, FZ Jülich, 52425 Jülich — 2Institute of Physics, Jagiellonian University, 30 064 Krakow, Poland
There is a great interest in η-physics in the recent years. Most of the
experiments investigate η production in an electromagnetic reaction or in
p+d collisions. The existing data for the d→+d→4He+η reaction are so far limited to the total cross section for the beam momentum near threshold. There are many theoretical models describing the η production in pd → 3He η reaction. Kilian and Nann proposed two step model to describe the d→+d→4He+η reaction. However due to the lack of the data the question about underlying reaction mechanism can not be answered without new measurements. The measurement of the d→+d→4He+η reaction using a polarised beam was performed at COSY accelerator in Jülich. The results obtained so far will be presented.
Supported in part by FZ Jülich, DAAD D/04/25575 and Int. Büro BMBF (DLR) contract IND 01/022.