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arXiv · 2308.15832

Higgs Probes of axion-like particles

Masashi Aiko·Motoi Endo
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Abstract

We study axion-like particle contributions to the Higgs boson decays. The particle is assumed to couple with the standard model electroweak gauge bosons. Although direct productions of axion-like particles have often been discussed, we investigate indirect contributions to the Higgs boson decays into fermions, photons, $W$, and $Z$ bosons at the one-loop level. It is found that the corrections to the fermions are suppressed, whereas precise measurements of the di-photon channel of the Higgs boson decay can provide a significant probe of the model especially when the axion-like particle is heavy and its coupling to di-photon is suppressed.

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Masashi Aiko, Motoi Endo. 2023-08-30. Higgs Probes of axion-like particles. https://arxiv.org/abs/2308.15832

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