The eta-prime meson production in the reaction pp-->pp eta-prime has been studied at excess energies of Q = 26.5, 32.5 and 46.6 MeV using the internal beam facility COSY-11 at the cooler synchrotron COSY. The total cross sections as well as one angular distribution for the highest Q-value are presented. The excitation function of the near threshold data can be described by a pure s-wave phase space distribution with the inclusion of the proton-proton final state interaction and Coulomb effects. The obtained angular distribution of the eta-prime mesons is also consistent with pure s-wave production.
@article{arxiv.nucl-ex/0401011,
title = {Total and Differential Cross Sections for the pp-->pp eta-prime Reaction Near Threshold},
author = {A. Khoukaz and I. Geck and C. Quentmeier and H. -H. Adam and A. Budzanowski and R. Czyzykiewicz and D. Grzonka and L. Jarczyk and K. Kilian and P. Kowina and N. Lang and T. Lister and P. Moskal and W. Oelert and C. Piskor-Ignatowicz and T. Rozek and R. Santo and G. Schepers and T. Sefzick and S. Sewerin and M. Siemaszko and J. Smyrski and A. Strzalkowski and A. Taschner and P. Winter and M. Wolke and P. Wustner and W. Zipper},
journal= {arXiv preprint arXiv:nucl-ex/0401011},
year = {2009}
}