Year: 2003
Type: conference-paper
Abstract: By means of the COSY-11 detection system, using a stochastically cooled proton beam of the cooler synchrotron COSY and a hydrogen cluster target, we have performed a high statistics measurement of the pp --> pp eta reaction at an excess energy of Q = 15.5 MeV. The experiment was based on the four-momentum determination of both outgoing protons. This permits to identify pp --> pp eta events and to derive the complete kinematical information of the eta-p-p-system allowing for subsequent investigations of the eta-p interaction. The observed spectrum of the invariant mass of the proton-proton system deviates strongly from the phase-space distribution revealing the influence of the final-state-interaction among the outgoing particles or nontrivial features of the primary production mechanism.
Authors: P. MOSKAL, H.-H. ADAM, A. BUDZANOWSKI, R. CZYŻYKIEWICZ, D. GRZONKA, M. JANUSZ, L. JARCZYK, B. KAMYS, A. KHOUKAZ, K. KILIAN, P. KOWINA, N. LANG, T. LISTER, W. OELERT, T. ROŻEK, R. SANTO, G. SCHEPERS, T. SEFZICK, M. SIEMASZKO, J. SMYRSKI, S. STELTENKAMP, A. STRZAŁKOWSKI, P. WINTER, M. WOLKE, P. WÜSTNER, W. ZIPPER
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1995556186