Abstract
The NN scattering Bethe-Salpeter equation is solved for $T=1$ partial wave amplitudes up to 1 GeV lab energy. Coupling to $\mathrm{N}\ensuremath{\Delta}$ intermediate states is included by $\ensuremath{\pi}$ and $\ensuremath{\rho}$ exchange, while NN \ensuremath{\leftrightarrow} NN interactions are due to combined $\ensuremath{\pi}$, $\ensuremath{\rho}$, $\ensuremath{\eta}$, $\ensuremath{\epsilon}$, $\ensuremath{\delta}$, and $\ensuremath{\omega}$ mesons. Inclusion of $\ensuremath{\rho}$ exchange improves agreement with phase shift analysis in a systematic way.NUCLEAR REACTIONS Bethe-Salpeter equation, coupled NN-$\mathrm{N}\ensuremath{\Delta}$ scattering, $\ensuremath{\rho}$ exchange, NN $T=1$ phase shifts.
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