PreprintCC BY 4.0arXiv
One-loop contributing for A → Z Z γ in the Two-Higgs-Doublet Model with Vector-Like Quarks
Abstract
In this paper, we present the first results for the one-loop decay A → ZZγ in the Two-Higgs-Doublet Model and its extension with Vector-Like Quarks. We calculate the one-loop partial decay widths and branching ratios for both unpolarized and polarized final-state Z bosons. The effects of Vector-Like Quarks propagating in the loop are also examined in our phenomenological analysis. We find that the branching ratios can reach 10−5−10−4 for several benchmark points within the viable parameter space of the considered models. The contributions from Vector-Like Quarks can modify the total rates by approximately 5%. With the high luminosities expected at future multi-TeV muon colliders, these effects may be experimentally accessible.
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BibTeX
@misc{tran2026oneloop,
title = {{One-loop contributing for $A \rightarrow Z Z γ$ in the Two-Higgs-Doublet Model with Vector-Like Quarks}},
author = {Dzung Tri Tran and Vo Quoc Phong and Khiem Hong Phan},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.17801},
eprint = {2610.17801},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.17801},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - One-loop contributing for A → Z Z γ in the Two-Higgs-Doublet Model with Vector-Like Quarks
AU - Dzung Tri Tran
AU - Vo Quoc Phong
AU - Khiem Hong Phan
PY - 2026
DA - 2026/10/13
PB - arXiv
DO - 10.48550/arxiv.2610.17801
UR - https://arxiv.org/abs/2610.17801
AB - In this paper, we present the first results for the one-loop decay A → ZZγ in the Two-Higgs-Doublet Model and its extension with Vector-Like Quarks. We calculate the one-loop partial decay widths and branching ratios for both unpolarized and polarized final-state Z bosons. The effects of Vector-Like Quarks propagating in the loop are also examined in our phenomenological analysis. We find that the branching ratios can reach 10^−5−10^−4 for several benchmark points within the viable parameter space of the considered models. The contributions from Vector-Like Quarks can modify the total rates by approximately 5%. With the high luminosities expected at future multi-TeV muon colliders, these effects may be experimentally accessible.
ER -