New results on the pd --> 3He eta production near threshold

Details New results on the pd --> 3He eta production near threshold New results on the pd --> 3He eta production near threshold

2004-09-22

arxiv.org/abs/hep-ex/0409048v1

Int.J.Mod.Phys.A20:643-645,2005

Physics

High Energy Physics

High Energy Physics - Experiment

Presented at MESON 2004: 8th International Workshop on Meson Production, Properties and Interactions, Cracow, Poland, 4-8 Jun

Scientific paper

10.1142/S0217751X05022032

Measurements on the eta meson production in proton-deuteron collisions have been performed using the COSY-11 facility at COSY Juelich. Here we present preliminary results on total and differential cross sections for the pd --> 3He eta reaction at five excess energies between Q = 5.1 and Q = 40.6 MeV. The obtained angular distributions for the emitted eta mesons in the center of mass system expose a transition from an almost isotropic emission to a highly anisotropic distribution. The extracted total cross sections support a strong eta-3He final state interaction and will be compared with model predictions.

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