Comparison of η and η ′ production in the p p → p p η ( η ′ ) reactions near threshold

@inproceedings{Hibou1998ComparisonO,
  title={Comparison of η and η ′ production in the p p → p p η ( η ′ ) reactions near threshold},
  author={F. Hibou and O. Bing and M. Boivin and P. Courtat and G. F{\"a}ldt and R. Gacougnolle and Y. Le Bornec and J. M. Martin and Alimohammed S Moalem and François Plouin and A R Taleb and B. Tatischeff and Colin Wilkin and Natalie Willis and R. Wurzinger},
  year={1998}
}
The total cross section of the p p → p p η reaction has been measured at two energies near threshold by detecting the final protons in a magnetic spectrometer. The values obtained are about a factor of 70 less than for the corresponding η production, in good agreement with the predictions of a one-pion-exchange