Measurement of the eta production in proton proton collisions with the COSY time of flight spectrometer

Abdel-Bary, M.; Naumann, L.; Schulte-Wissermann, M.; Meyer, W.; Filippi, L. V.; Clement, H.; Stinzing, F.; Abdel-Samad, S.; Wirth, S.; Kilian, K.; Kuhlmann, E.; Schönmeier, P.; Schröder, W.; Schmitz, M.; Freiesleben, H.; Hesselbarth, D.; Wilms, A.; Kress, J.; Sun, G.-Y.; Zupranski, P.; Marcello, S.; Gillitzer, C. G.; Geyer, R.; Michel, P.; Morsch, H.-P.; Dutz, H.; Filges, D.; Wagner, G.-J.; Mauro, S.; Eyrich, W.; Karsch, L.; Wagner, M.; Jakob, B.; Rogge, M.; Brinkmann, K.; Möller, K.-M.; Marwinski, S.; Dshemuchadse, S.; Erhardt, A.; Fritsch, J. M.; Schamlott, A.; Roderburg, E.; Paul, N.; Sefzick, N. Y.; Dorochkevitch, E.; Bilger, R.; Wintz, P.; Koch, H.; Richter, M.

doi:10.1140/epja/i2002-10079-7

Journal Article

Measurement of the eta production in proton proton collisions with the COSY time of flight spectrometer

Abdel-Bary, M.FZJ* ; Abdel-Samad, S.FZJ* ; Bilger, R. ; Brinkmann, K. ; Clement, H. ; Dshemuchadse, S. ; Dorochkevitch, E. ; Dutz, H. ; Eyrich, W. ; Erhardt, A. ; Filges, D.FZJ* ; Filippi, L. V. ; Freiesleben, H. ; Fritsch, J. M. ; Geyer, R.FZJ* ; Gillitzer, C. G.FZJ* ; Hesselbarth, D.FZJ* ; Jakob, B. ; Karsch, L. ; Kilian, K.FZJ* ; Koch, H. ; Kress, J. ; Kuhlmann, E.FZJ* ; Marcello, S. ; Marwinski, S.FZJ* ; Mauro, S. ; Meyer, W. ; Michel, P. ; Möller, K.-M. ; Morsch, H.-P.FZJ* ; Naumann, L. ; Paul, N.FZJ* ; Richter, M. ; Roderburg, E.FZJ* ; Rogge, M.FZJ* ; Schamlott, A. ; Schmitz, M.FZJ* ; Schönmeier, P. ; Schulte-Wissermann, M. ; Schröder, W. ; Sefzick, N. Y.FZJ* ; Stinzing, F. ; Sun, G.-Y. ; Wagner, G.-J. ; Wagner, M. ; Wilms, A. ; Wintz, P.FZJ* ; Wirth, S. ; Zupranski, P.

2003
Springer Berlin

The European physical journal / A 16, 127 - 137 (2003) [10.1140/epja/i2002-10079-7]

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Please use a persistent id in citations: http://hdl.handle.net/2128/13310 doi:10.1140/epja/i2002-10079-7

Abstract: The reaction pp --> ppn was measured at excess energies of 15 and 41 MeV at an external target of the Julich Cooler Synchrotron COSY with the time-of-flight spectrometer. About 25000 events were measured for the excess energy of 15 MeV and about 8000 for 41 MeV. Both protons of the process ppn were detected with an acceptance of nearly 100% and the n was reconstructed by the missing-mass technique. For both excess energies the angular distributions are found to be nearly isotropic. In the invariant-mass distributions strong deviations from the pure phase space distributions are seen.

Keyword(s): p p: elastic scattering ; eta: hadroproduction ; mass spectrum: (2p) ; mass spectrum: missing-mass ; angular distribution ; spectrometer: time-of-flight ; experimental results ; Juelich COSY PS ; p p --> 2p eta