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Bian, LG; Liu, T; Shu, J; Shu, J (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector
Source PublicationPHYSICAL REVIEW LETTERS
Language英语
AbstractWe present a class of cancellation conditions for suppressing the total contributions of Barr-Zee diagrams to the electron electric dipole moment (eEDM). Such a cancellation is of particular significance after the new eEDM upper limit was released by the ACME Collaboration, which strongly constrains the allowed magnitude of CP violation in Higgs couplings and hence the feasibility of electroweak baryogenesis (EWBG). Explicitly, if both the CP-odd Higgs-photon-photon (Z boson) and the CP-odd Higgs-electron-positron couplings are turned on, a cancellation may occur either between the contributions of a CP-mixing Higgs boson, with the other Higgs bosons being decoupled, or between the contributions of CP-even and CP-odd Higgs bosons. With a cancellation, large CP violation in the Higgs sector is still allowed, yielding successful EWBG. The reopened parameter regions would be probed by future neutron, mercury EDM measurements, and direct measurements of Higgs CP properties at the Large Hadron Collider Run II and future colliders.
2015
Volume115Issue:2Pages:21801
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1103/PhysRevLett.115.021801
Indexed BySCI
Funding Organizationstart-up fund at the Hong Kong University of Science and Technology ; start-up fund at the Hong Kong University of Science and Technology ; start-up fund at the Hong Kong University of Science and Technology ; start-up fund at the Hong Kong University of Science and Technology
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20929
Collection理论物理所科研产出_SCI论文
Corresponding AuthorShu, J (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Bian, LG,Liu, T,Shu, J,et al. Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector[J]. PHYSICAL REVIEW LETTERS,2015,115(2):21801.
APA Bian, LG,Liu, T,Shu, J,&Shu, J .(2015).Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector.PHYSICAL REVIEW LETTERS,115(2),21801.
MLA Bian, LG,et al."Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector".PHYSICAL REVIEW LETTERS 115.2(2015):21801.
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