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Limiting FCNC induced by a CP symmetry of order 4

  • Regular Article - Theoretical Physics
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  • Published: 24 April 2023
  • Volume 2023, article number 116, (2023)
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Journal of High Energy Physics Aims and scope Submit manuscript
Limiting FCNC induced by a CP symmetry of order 4
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  • Duanyang Zhao  ORCID: orcid.org/0009-0002-2197-33811,
  • Igor P. Ivanov  ORCID: orcid.org/0000-0001-7068-29301,
  • Roman Pasechnik2 &
  • …
  • Pengming Zhang1 

  • 268 Accesses

  • 1 Altmetric

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A preprint version of the article is available at arXiv.

Abstract

CP4 3HDM is a three-Higgs-doublet model based on the CP symmetry of order 4 (CP4). Imposing CP4 leads to remarkable connections between the scalar and Yukawa sectors and unavoidably generates tree-level flavor-changing neutral couplings (FCNC). It remains unclear whether FCNC can be sufficiently suppressed in the CP4 3HDM. In this paper, we systematically explore this issue. We first develop an efficient scanning procedure which takes the quark masses and mixing as input and expresses the FCNC matrices in terms of physical quark observables and quark rotation parameters. This procedure allows us to explore the FCNC effects for all the Yukawa sectors possible within the CP4 3HDM. We find that, out of the eight possible CP4 Yukawa sectors, only two scenarios are compatible with the K, B, Bs and, in particular, D-meson oscillation constraints. The results of this work serve as clear guidelines for future phenomenological scans of the model.

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Author information

Authors and Affiliations

  1. School of Physics and Astronomy, Sun Yat-sen University, University road 2, Zhuhai, 519082, China

    Duanyang Zhao, Igor P. Ivanov & Pengming Zhang

  2. Department of Physics, Lund University, Professorsgatan 1, SE-223 62, Lund, Sweden

    Roman Pasechnik

Authors
  1. Duanyang Zhao
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  2. Igor P. Ivanov
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  3. Roman Pasechnik
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  4. Pengming Zhang
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Correspondence to Igor P. Ivanov.

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Zhao, D., Ivanov, I.P., Pasechnik, R. et al. Limiting FCNC induced by a CP symmetry of order 4. J. High Energ. Phys. 2023, 116 (2023). https://doi.org/10.1007/JHEP04(2023)116

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  • Received: 14 February 2023

  • Revised: 11 April 2023

  • Accepted: 12 April 2023

  • Published: 24 April 2023

  • DOI: https://doi.org/10.1007/JHEP04(2023)116

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Keywords

  • Multi-Higgs Models
  • Flavour Symmetries
  • Discrete Symmetries
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