Recent results obtained by the COSY-11 collaboration concerning the production of eta and eta' mesons in the pp --> pp Meson reaction are presented. A comparison of the production amplitude for the pi(0), eta and eta' mesons at the same phase space volume allows to conclude that the proton-eta' interaction is in the order of, or smaller than, the proton-pi(0) one. A total cross section determined in a preliminary analysis of the data of elementary kaon and antikaon production via the pp-->ppK(+)K(-) reaction measured at excess energy of Q = 17 MeV is reported.
@article{arxiv.nucl-ex/0007018,
title = {Proton-proton collisions at production thresholds},
author = {P. Moskal and H. -H. Adam and A. Budzanowski and D. Grzonka and L. Jarczyk and A. Khoukaz and K. Kilian and M. Koehler and P. Kowina and N. Lang and T. Lister and W. Oelert and C. Quentmeier and R. Santo and G. Schepers and T. Sefzick and S. Sewerin and M. Siemaszko and J. Smyrski and M. Sokolowski and A. Strzalkowski and M. Wolke and P. Wuestner and W. Zipper},
journal= {arXiv preprint arXiv:nucl-ex/0007018},
year = {2009}
}
Comments
Talk given at the International Workshop MESON'2000, Cracow, Poland, 19-23 May 2000, 8pp. To be published in Acta Phys. Pol. B