Effects of Relativistic Dynamics in pp to pp π⁰ near Threshold
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⚛️ nucl-th
keywords
thresholdcollisionscomparedconsiderablyconsideredcontributioncouplingcovariant
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The cross-section for threshold $\pi^0$ production in proton-proton collisions is evaluated in the framework of the covariant spectator description. The negative energy intermediate states are included non-perturbatively and seen to yield a considerably smaller contribution, when compared to perturbative treatments. A family of OBE-models with different off-shell scalar coupling is considered.
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