Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector

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	Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a CP-Violating Higgs Sector
	Bian, LG; Liu, T; Shu, J
刊名	PHYSICAL REVIEW LETTERS
	2015
卷号	115 期号:2 页码:21801
通讯作者	Shu, J (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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.
学科主题	Physics
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
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20929]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	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.
APA	Bian, LG,Liu, T,&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.