Energy dependence of the near-threshold total cross-section for the /pp-->ppη' reaction
Abstract
Total cross sections for the /pp-->ppη' reaction have been measured in the excess energy range from /Q=1.53 MeV to /Q=23.64 MeV. The experiment has been performed at the internal installation COSY-11 [1] using a stochastically cooled proton beam of the COoler SYnchrotron COSY [2] and a hydrogen cluster target [3] [4] . The determined energy dependence of the total cross section weakens the hypothesis of the S-wave repulsive interaction between the /η' meson and the proton [5] [6] . New data agree well with predictions based on the phase-space distribution modified by the proton-proton final-state-interaction (FSI) only.
- Publication:
-
Physics Letters B
- Pub Date:
- February 2000
- DOI:
- 10.1016/S0370-2693(00)00039-3
- arXiv:
- arXiv:nucl-ex/0001001
- Bibcode:
- 2000PhLB..474..416M
- Keywords:
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- Nuclear Experiment
- E-Print:
- 12 pages, 1 table, 4 figures