U. Vankolck et al., MESON-EXCHANGE AND PION RESCATTERING CONTRIBUTIONS TO THE CROSS-SECTION FOR PP-]PP-PI(0), Physics letters. Section B, 388(4), 1996, pp. 679-685
Short range meson-exchange mechanisms such as rho --> omega pi(0) cont
ribute significantly to the amplitude for pp --> pp pi(0) near thresho
ld in addition to pion rescattering. The uncertainty of the latter con
tribution, which depends on poorly determined parameters, is estimated
. Allowing for this uncertainty and taking the short range meson excha
nge contributions into account makes it possible to reproduce the meas
ured cross section.