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题名: Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector
作者: Bian, LG;  Liu, T;  Shu, J
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2015
卷号: 115, 期号:2, 页码:21801
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevLett.115.021801
通讯作者: Shu, J (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We 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.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: STANDARD MODEL ;  ATLAS DETECTOR ;  BOSON-EXCHANGE ;  NEUTRON ;  PHENOMENOLOGY ;  MSSM ;  TOOL ;  LHC
收录类别: SCI
项目资助者: start-up fund at the Hong Kong University of Science and Technology
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20929
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Bian, LG,Liu, T,Shu, J. 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.
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