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$NN \to NN π$ reaction near threshold in a covariant one-boson-exchange model

R. Shyam·U. Mosel
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Abstract

We calculate the cross sections for the $p(p,nπ^{+})p$ and $p(p,pπ^{0})p$ reactions for proton beam energies near threshold in a covariant one-boson-exchange model, which incorporates the exchange of $π$, $ρ$, $σ$ and $ω$ mesons and treats both nucleon and delta isobar as intermediate states. The final state interaction effects have also been included. The $ω$ meson exchange is found to contribute significantly at these energies, which, along with other meson exchanges, provides an excellent agreement with the data. The cross sections at beam energies $\leq$ 300 MeV are almost free from the contributions of the $Δ$ isobar excitation.

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R. Shyam, U. Mosel. 1996-11-07. $NN \to NN π$ reaction near threshold in a covariant one-boson-exchange model. https://doi.org/10.1016/s0370-2693(98)00297-4

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