希格斯玻色子和风味等级的共同起源

IF 5.4 1区 物理与天体物理 Q1 Physics and Astronomy
Javier M. Lizana
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引用次数: 0

摘要

我们提出了一个将标准模型的电弱规范对称以非普适方式扩展到\( \textrm{SU}{(2)}_L^{\prime}\times \textrm{U}{(1)}_X\times \textrm{SU}{(2)}_L^{q_3}\times \textrm{SU}{(2)}_R^{\ell^3} \)的模型。这种对称性在TeV尺度附近被一个新的复合扇区的凝聚自发地打破为SU(2)L × U(1)Y。适当地给复合扇区的费米子自由度充电,异常抵消使标准模型费米子以这样一种方式充电,即扩展规范相互作用尊重U(2)q × U(2)e × U(3) U × U(3)d × U(3) l偶然味对称。此外,从相同的对称破缺中,复合希格斯玻色子作为新扇区强动力学的伪南布-戈德斯通玻色子出现。由于扩展规范和特定风味对称,希格斯和费米子之间的汤川耦合只能写在第三代,高维算符产生抑制的光族汤川耦合。此外,第三族和轻族之间的CKM混合角自然受到抑制,而PMNS混合角则是无政府状态。因此,该模型为希格斯玻色子以及第三族和轻族之间的风味等级提供了一个统一的起源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A common origin of the Higgs boson and the flavor hierarchies

We present a model that extends the electroweak gauge symmetry of the Standard Model in a non-universal way to \( \textrm{SU}{(2)}_L^{\prime}\times \textrm{U}{(1)}_X\times \textrm{SU}{(2)}_L^{q_3}\times \textrm{SU}{(2)}_R^{\ell^3} \). This symmetry is spontaneously broken to SU(2)L × U(1)Y near the TeV scale by a condensate of a new composite sector. Charging appropriately the fermionic degrees of freedom of the composite sector, anomaly cancellation enforces the Standard Model fermions to be charged in such a way that the extended gauge interactions respect a U(2)q × U(2)e × U(3)u × U(3)d × U(3) accidental flavor symmetry. In addition, from the same symmetry breaking, a composite Higgs boson emerges as a pseudo-Nambu-Goldstone boson of the strong dynamics of the new sector. Due to the extended gauge and the specific flavor symmetry, leading Yukawa couplings between Higgs and fermions can only be written for the third generation and higher dimension operators generate suppressed light-family Yukawa couplings. Furthermore, CKM mixing angles between third and light families result naturally suppressed while the PMNS ones, anarchic. The model thus provides a unified origin for the Higgs boson and the flavor hierarchies between third and light families.

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来源期刊
Journal of High Energy Physics
Journal of High Energy Physics 物理-物理:粒子与场物理
CiteScore
10.30
自引率
46.30%
发文量
2107
审稿时长
1.5 months
期刊介绍: The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).
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