Effective field theory perspective on next-to-minimal composite Higgs models

doi:10.1103/PhysRevD.103.015013

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	Effective field theory perspective on next-to-minimal composite Higgs models
	Qi, Yong-Hui ; Yu, Jiang-Hao ; Zhu, Shou-Hua
刊名	PHYSICAL REVIEW D
	2021
卷号	103 期号:1 页码:15013
关键词	SYMMETRY BREAKING
ISSN号	2470-0010
DOI	10.1103/PhysRevD.103.015013
英文摘要	We study both the CP-even and CP-odd effective chiral Lagrangians of a next-to-minimal composite Higgs model, with a symmetry breaking pattern depicted by the coset SO(6)/SO(5) through the sigma/ omega decomposition, in which the Goldstone matrix of the coset is decomposed in terms of the standard model Higgs doublet and an additional scalar singlet s at the electroweak scale. The effective Lagrangians are described by the electroweak chiral operators up to p(4) order, with a function dependence on the Higgs boson and new scalar s, named Higgs function. This function in the effective Lagrangian incorporates the Higgs nonlinearity or vacuum misalignment effects in the next-to-minimal composite Higgs model, leads to various Higgs couplings deviated from the standard model ones, and also indicates the relations among different Higgs couplings in the low energy. Matching to the Higgs effective field theory below the electroweak scale, we obtain various low-energy observables such as the electroweak oblique parameters, anomalous triple and quartic gauge couplings, anomalous couplings of Higgs to gauge bosons, in which the Higgs nonlinearity effects are encoded in the ratio. xi v(2) / f(2) of the electroweak scale and the new physics scale. As a by-product, we obtain a generalized Maurer-Cartan equation sourced by non-Abelian gauge fields. The equation interprets the dynamical interplay between nonlinear realization of pseudo-Nambu-Goldstone bosons (or Higgs) and the gauge fields, and provides a nonlinear generalization of the dynamical electroweak symmetry breaking.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27312]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.[Qi, Yong-Hui 2.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 3.Asia Pacific Ctr Theoret Phys, Pohang 37673, Gyeongbuk, South Korea 4.Pohang Univ Sci & Technol, Dept Phys, Pohang 37673, Gyeongbuk, South Korea 5.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 7.Peking Univ, Dept Phys, Beijing 100871, Peoples R China 8.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 9.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Qi, Yong-Hui,Yu, Jiang-Hao,Zhu, Shou-Hua. Effective field theory perspective on next-to-minimal composite Higgs models[J]. PHYSICAL REVIEW D,2021,103(1):15013.
APA	Qi, Yong-Hui,Yu, Jiang-Hao,&Zhu, Shou-Hua.(2021).Effective field theory perspective on next-to-minimal composite Higgs models.PHYSICAL REVIEW D,103(1),15013.
MLA	Qi, Yong-Hui,et al."Effective field theory perspective on next-to-minimal composite Higgs models".PHYSICAL REVIEW D 103.1(2021):15013.