Electroweak corrections to the SM-like Higgs boson decays and the Higgs trilinear coupling in the real Higgs triplet model

@misc{aiko2026electroweak,
  title = {{Electroweak corrections to the SM-like Higgs boson decays and the Higgs trilinear coupling in the real Higgs triplet model}},
  author = {Masashi Aiko and Shinya Kanemura and Mariko Kikuchi and Kodai Sakurai and Sora Taniguchi and Kei Yagyu},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.04857},
  eprint = {2611.04857},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.04857},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Electroweak corrections to the SM-like Higgs boson decays and the Higgs trilinear coupling in the real Higgs triplet model
AU  - Masashi Aiko
AU  - Shinya Kanemura
AU  - Mariko Kikuchi
AU  - Kodai Sakurai
AU  - Sora Taniguchi
AU  - Kei Yagyu
PY  - 2026
DA  - 2026/11/03
PB  - arXiv
DO  - 10.48550/arxiv.2611.04857
UR  - https://arxiv.org/abs/2611.04857
AB  - We study new physics effects on the decays of the standard model-like Higgs boson (h) and the Higgs trilinear coupling including the full one-loop corrections in the real Higgs triplet model (RHTM). We adopt the on-shell renormalization scheme, in which the scalar mixing angles are renormalized in a gauge-independent way using the pinch technique. We found that sizable one-loop effects can arise in the decay rates through the Higgs wave-function (external-leg) corrections, while the tree-level effects are rather small due to the constraint on the vacuum expectation value of the triplet field from the electroweak precision measurements. In addition, the h→γγ decay rate and the hhh coupling are sensitive to loop contributions. The RHTM may be distinguishable from other extended Higgs models by studying the correlations among the h→ττ, h→ ZZ^*, and h→γγ decay modes, and such characteristic predictions can be tested at the High-Luminosity LHC or future Higgs factories.
ER  -