• Open Access

CP phases in 2HDM and effective potential: A geometrical view

Qing-Hong Cao, Kun Cheng, and Changlong Xu
Phys. Rev. D 107, 015016 – Published 20 January 2023

Abstract

Using a geometric description of 2HDM, the CP-odd invariants are classified into three independent sectors: scalar potential, Yukawa interaction, and CKM matrix. We calculate the effective thermal potential of 2HDM in a basis invariant way and show that the CP phases in the CKM matrix cannot leak to the effective potential at all orders. In the 2HDM with a softly broken Z2 symmetry, the leading thermal correction to the effective potential tends to restore the CP symmetry at high temperatures.

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  • Received 17 June 2022
  • Accepted 4 January 2023

DOI:https://doi.org/10.1103/PhysRevD.107.015016

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Qing-Hong Cao1,2,3,*, Kun Cheng1,†, and Changlong Xu1,‡

  • 1Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
  • 2Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • 3Center for High Energy Physics, Peking University, Beijing 100871, China

  • *qinghongcao@pku.edu.cn
  • chengkun@pku.edu.cn
  • changlongxu@pku.edu.cn

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Issue

Vol. 107, Iss. 1 — 1 January 2023

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