2 to n threshold production at tree level
classification
✦ hep-ph
keywords
particlesthresholdtreeamplitudeapproximationarbitrarybehaviorcompute
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The threshold behavior of a theory with two coupled scalar fields $\chi$ and $\phi$ is investigated. We compute the amplitude for two on-mass-shell $\chi$-particles to produce an arbitrary number of $\phi$-particles at rest in the tree approximation.
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