1202.4108 (COSY-TOF Collaboration: M. Abdel-Bary et al.)

The pK0Σ+ final state in proton-proton collisions    [PDF]

COSY-TOF Collaboration: M. Abdel-Bary, S. Abdel-Samad, K-Th. Brinkmann, H. Clement, J. Dietrich, E. Doroshkevich, S. Dshemuchadse, K. Ehrhardt, A. Erhardt, W. Eyrich, A. Filippi, H. Freiesleben, M. Fritsch, W. Gast, J. Georgi, A. Gillitzer, J. Gottwald, D. Hesselbarth, H. Jäger, B. Jakob, R. Jäkel, L. Karsch, K. Kilian, H. Koch, M. Krapp, J. Kreß, E. Kuhlmann, A. Lehmann, S. Marcello, S. Marwinski, S. Mauro, W. Meyer, P. Michel, K. Möller, H. P. Morsch, H. Mörtel, L. Naumann, N. Paul, L. Pinna, C. Pizzolotto, Ch. Plettner, S. Reimann, M. Richter, J. Ritman, E. Roderburg, A. Schamlott, P. Schönmeier, W. Schroeder, M. Schulte-Wissermann, T. Sefzick, F. Stinzing, M. Steinke, G. Y. Sun, A. Teufel, W. Ullrich, G. J. Wagner, M. Wagner, R. Wenzel, A. Wilms, P. Wintz, S. Wirthand, P. Wüstner, P. Zupranski

This paper reports results from a study of the reaction pp->pK0\Sigma+ at
beam momenta of p_{beam} = 2950, 3059, and 3200 MeV/c (excess energies of
\epsilon= 126, 161, and 206 MeV). Total cross sections were determined for all
energies; a set of differential cross sections (Dalitz plots; invariant mass
spectra of all two-body subsystems; angular distributions of all final state
particles; distributions in helicity and Jackson frames) are presented for
\epsilon= 161 MeV. The total cross sections are proportional to the volume of
available three-body phase-space indicating that the transition matrix element
does not change significantly in this range of excess energies. It is concluded
from the differential data that the reaction proceeds dominantly via the
N(1710)P_{11} and/or N(1720)P_{13} resonance(s); N(1650)S_{11} and
\Delta(1600)P_{33} could also contribute.

View original: http://arxiv.org/abs/1202.4108