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

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

1996-11-07

arxiv.org/abs/nucl-th/9611013v1

Phys.Lett. B426 (1998) 1-6

Physics

Nuclear Physics

Nuclear Theory

Latex file, 11 pages, 3 postscript figures

Scientific paper

10.1016/S0370-2693(98)00297-4

We calculate the cross sections for the $p(p,n\pi^{+})p$ and $p(p,p\pi^{0})p$ reactions for proton beam energies near threshold in a covariant one-boson-exchange model, which incorporates the exchange of $\pi$, $\rho$, $\sigma$ and $\omega$ mesons and treats both nucleon and delta isobar as intermediate states. The final state interaction effects have also been included. The $\omega$ 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 $\Delta$ isobar excitation.

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