Study of eta'-Meson Production in the Reaction pd->³He eta' at COSY-11


We propose to continue our investigations on the reaction pd->³He eta' near threshold using the COSY-11 installation. The identification of the outgoing ³He nuclei and the determination of their four momentum vectors will be provided by using drift chambers and scintillation walls. With this information it is possible to calculate the missing mass of the unobserved particle X of the reaction pd->³He X, which leads to a full event reconstruction in case of the two particle final state of interest. Since the installation COSY-11 takes advantage of the internal cluster target (single particle interaction, no target windows) in combination with a stochastically cooled beam, in view of its high luminosities this experimental setup is suited well for taking high precision data in the near threshold region.

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