Higgs Probes of axion-like particles
Masashi Aiko, Motoi Endo

TL;DR
This paper explores how axion-like particles can indirectly influence Higgs boson decays into various particles through one-loop corrections, highlighting the potential of di-photon decay measurements to probe these particles.
Contribution
It introduces a detailed analysis of indirect Higgs decay modifications caused by axion-like particles, emphasizing the importance of di-photon decay channels for detection.
Findings
Fermion decay corrections are suppressed.
Di-photon decay channels offer significant probing potential.
Heavy axion-like particles with suppressed couplings can still be detected via Higgs decay measurements.
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, , and 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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Taxonomy
TopicsDark Matter and Cosmic Phenomena · Particle physics theoretical and experimental studies · Cosmology and Gravitation Theories
