R. Czyżykiewicz

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Preprint version. The figures in here have reduced size and, thus, reduced quality. The original proposal can be accessed at i ii Executive Summary The document at hand describes the physics case, the key experiments proposed and the technical solution for the project " WASA at COSY " , which concerns the transfer of the WASA pellet-target and detector(More)
Taking advantage of both the low-emittance proton beam of the cooler synchrotron COSY and the high momentum precision of the COSY-11 detector system, the mass distribution of the η' meson was measured with a resolution of 0.33  MeV/c2 (FWHM), improving the experimental mass resolution by almost an order of magnitude with respect to previous results. Based(More)
Polarisation observables constitute a powerful tool for establishing the production mechanism of the η meson and for infering the presence of higher partial waves in the final system. Measurements of the proton analysing power for the ¦ p p § ppη reaction have been performed by the COSY-11 group at three different excess energies: Q=10, 37 and 40 MeV. Data(More)
Measurements of the analyzing power for the pp-->pp eta reaction have been performed at excess energies of Q=10 and 36 MeV. The determined analyzing power is essentially consistent with zero, implying dominance of the s wave at both excess energies. The angular dependence of the analyzing power, combined with the isospin dependence of the total cross(More)
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