Tridiagonal scalar mass matrix in the CP4 3HDM and its implications
(2025) In Journal of High Energy Physics 2025(2).- Abstract
When parametrizing multi-Higgs potentials, it is desirable to express its coefficients via observables. This is routinely done for the 2HDM, but this approach often fails in more elaborate models. Here, we show that the scalar sector of the CP4 3HDM, an intriguing model based on an order-4 CP symmetry, can also be parametrized in an observable-driven manner. The key feature that makes it work is the very special tridiagonal form of the 5 × 5 neutral Higgs mass matrix. We propose a set of input observables and present an algorithm to reconstruct the coefficients of the potential through linear relations. Equipped with this procedure, we explore the scalar sector of the CP4 3HDM beyond the limitations of previous studies. In particular,... (More)
When parametrizing multi-Higgs potentials, it is desirable to express its coefficients via observables. This is routinely done for the 2HDM, but this approach often fails in more elaborate models. Here, we show that the scalar sector of the CP4 3HDM, an intriguing model based on an order-4 CP symmetry, can also be parametrized in an observable-driven manner. The key feature that makes it work is the very special tridiagonal form of the 5 × 5 neutral Higgs mass matrix. We propose a set of input observables and present an algorithm to reconstruct the coefficients of the potential through linear relations. Equipped with this procedure, we explore the scalar sector of the CP4 3HDM beyond the limitations of previous studies. In particular, we identify a viable and testable regime in which all additional Higgses lie in the 300–600 GeV range. This work offers a key ingredient for a future full phenomenological scan of this model.
(Less)
- author
- Liu, Bei ; Ivanov, Igor P. and Gonçalves, João LU
- organization
- publishing date
- 2025-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- CP Violation, Discrete Symmetries, Multi-Higgs Models
- in
- Journal of High Energy Physics
- volume
- 2025
- issue
- 2
- article number
- 69
- publisher
- Springer
- external identifiers
-
- scopus:86000025430
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP02(2025)069
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © The Author(s) 2025.
- id
- 8b1148cd-ea06-4f48-883e-36cd6f85f113
- date added to LUP
- 2025-06-23 15:19:19
- date last changed
- 2025-06-23 15:19:58
@article{8b1148cd-ea06-4f48-883e-36cd6f85f113,
abstract = {{<p>When parametrizing multi-Higgs potentials, it is desirable to express its coefficients via observables. This is routinely done for the 2HDM, but this approach often fails in more elaborate models. Here, we show that the scalar sector of the CP4 3HDM, an intriguing model based on an order-4 CP symmetry, can also be parametrized in an observable-driven manner. The key feature that makes it work is the very special tridiagonal form of the 5 × 5 neutral Higgs mass matrix. We propose a set of input observables and present an algorithm to reconstruct the coefficients of the potential through linear relations. Equipped with this procedure, we explore the scalar sector of the CP4 3HDM beyond the limitations of previous studies. In particular, we identify a viable and testable regime in which all additional Higgses lie in the 300–600 GeV range. This work offers a key ingredient for a future full phenomenological scan of this model.</p>}},
author = {{Liu, Bei and Ivanov, Igor P. and Gonçalves, João}},
issn = {{1029-8479}},
keywords = {{CP Violation; Discrete Symmetries; Multi-Higgs Models}},
language = {{eng}},
number = {{2}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Tridiagonal scalar mass matrix in the CP4 3HDM and its implications}},
url = {{http://dx.doi.org/10.1007/JHEP02(2025)069}},
doi = {{10.1007/JHEP02(2025)069}},
volume = {{2025}},
year = {{2025}},
}