eta Production with a Polarized Proton Beam in the Proton-Proton Scattering at COSY-11


After the successful performance of a feasibility study on the ppol p->pp eta reaction at an excess energy of Q = 40 MeV a new beam time is requested for the measurements of the eta production in proton-proton collisions with transversally polarized proton beams equivalent to excess energies of Q = 10 MeV and Q = 4 MeV.

The physics' aim is to investigate the influence of higher partial waves in the ppol p->pp eta reaction through a determination of the eta analyzing power Ay and to test newly predictions.

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