Berlin 2005 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 9: Elektromagnetische und Hadronische Proben
HK 9.8: Vortrag
Freitag, 4. März 2005, 18:30–18:45, TU MA004
Study of the η meson production in the d→+d→4He+η reaction using the vector and tensor polarised deuteron beam — •Mariola Lesiak — Jagellonian Univ., Cracow, Poland — Inst. für Kernphysik, FZ Jülich
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 total cross
sections for the beam momentum near threshold. There are many
theoretical models describing the η production in p+d
→ 3He+ η reaction. Kilian and Nann proposed a two
step model to describe the d→+d→4He+η reaction. However due to the lack
of data the question of the underlying
reaction mechanism can not be answered without new measurements.
The measurements of the d→+d→4He+η reaction in a broad beam momentum
range from the near threshold region to 3.0 GeV/c is performed at
the COSY accelerator in Jülich. We used vector and tensor
polarised deuteron beams. The first results of the data analysis
will be presented.
Ref.: K. Kilian and H. Nann, AIP Conf. Proc. No. 221, p. 185 (1990)