Abstract
The pp→ppη′(958) reaction has been measured at the cooler synchrotron COSY at Jülich using the internal beam and the COSY-11 facility. The total cross sections at the four different excess energies Q=1.5,1.7,2.9, and 4.1MeV have been evaluated to be σ=2.5±0.5,2.9±1.1,12.7±3.2, and 25.2±3.6nb, respectively. In this region of excess energy the η′(958) cross sections are much lower compared to those of the π0 and η production.Received 1 December 1997DOI:https://doi.org/10.1103/PhysRevLett.80.3202©1998 American Physical Society
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