1 1 A pr 2 00 7 Two - pion - exchange contributions to the pp → ppπ 0 reaction


Our previous study of the near-threshold pp → ppπ reaction based on a hybrid nuclear effective field theory is further elaborated by examining the momentum dependence of the relevant transition operators. We show that the two-pion exchange diagrams give much larger contributions than the one-pion exchange diagram, even though the former is of higher order… (More)


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