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arXiv · hep-ph/9309231

Effects of Amplitude Nullification in the Standard Model

Brian Hendee Smith
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Abstract

Delicate cancellations among diagrams can result in the vanishing of threshold amplitudes in the standard model. This phenomenon is investigated for multi-Higgs production by scalar, vector, and fermionic fields. A surprising gap is found where although the tree-level amplitude for $2$ incoming gauge bosons to produce $N_v$ particle may vanish, the amplitude for the production of $N_{v}+1$ particles is nonzero.

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Brian Hendee Smith. 1993-09-06. Effects of Amplitude Nullification in the Standard Model. https://doi.org/10.1103/physrevd.49.1081

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