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Proton-proton collisions at production thresholds

P. Moskal, H. -H. Adam, A. Budzanowski, D. Grzonka, L. Jarczyk, A. Khoukaz, K. Kilian, M. Koehler, P. Kowina, N. Lang, T. Lister, W. Oelert, C. Quentmeier, R. Santo, G. Schepers, T. Sefzick, S. Sewerin, M. Siemaszko, J. Smyrski, M. Sokolowski, A. Strzalkowski, M. Wolke, P. Wuestner, W. Zipper

nucl-exarXiv:nucl-ex/0007018

Abstract

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.

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