Hadronic interaction of the eta meson with two nucleons
Abstract
The COSY-11 collaboration has conducted experiments aiming at the determination of the excitation function and phase-space population of the p p --> p p eta reaction close to the kinematical threshold. The precise data obtained with the stochastically cooled proton beam of the cooler synchrotron COSY and the high resolution zero-degree magnetic spectrometer allowed for the observation of the significant deviations - in the shape of the excitation function and two-particle invariant masses - from the predictions based on the assumption that the reaction phase space is homogenously populated. Comparison of the shape of the excitation function for the p p --> p p eta and p p --> p p eta-prime reaction allows to distinquish in the model independent way an influence originating from the proton-proton and proton-eta interaction. For the comparison the full data set from experiments performed at COSY and other laboratories is used.
Cite
@article{arxiv.hep-ex/0411052,
title = {Hadronic interaction of the eta meson with two nucleons},
author = {P. Moskal and H. -H. Adam and A. Budzanowski and R. Czyzykiewicz and D. Grzonka and M. Janusz and L. Jarczyk and B. Kamys and A. Khoukaz and K. Kilian and P. Klaja and J. Majewski and W. Oelert and C. Piskor-Ignatowicz and J. Przerwa and T. Rozek and T. Sefzick and M. Siemaszko and J. Smyrski and A. Taschner and P. Winter and M. Wolke and P. Wustner and W. Zipper},
journal= {arXiv preprint arXiv:hep-ex/0411052},
year = {2009}
}
Comments
Talk given at 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2004), Beijing, China, 29 Aug - 4 Sep 2004, 4 pages, 1 figure, to be published in Int. J. Mod. Phys