The cross sections for the reactions p+p→d+π⁺ and p+p→p+p+π⁰ are calculated for s-wave pions at threshold. The pion is produced by either nucleon and emitted directly or rescattered in an s wave by the second nucleon, through a modified static interaction. The two nucleons interact through a phenomenological potential. For the Hamada-Johnston potential both calculated cross sections agree with experimental results. Application of the method of calculation to the nuclear absorption of s-wave pions is discussed.
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Koltun et al. (1966) studied this question.
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