Understanding electroweak symmetry breaking from LHC data

了解大型强子对撞机数据中的电弱对称性破缺

• 批准号: 386346-2013
• 负责人: Grégoire, Thomas
• 金额: $ 4.37万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=595930
• 关键词: Understanding; electroweak; symmetry; breaking; LHC

The Standard Model(SM) of particle physics gives a description of all the particles and forces known to date. Over the past 50 years it has been tested to exquisite precision. The theoretical description of the Standard Model is based on an elegant symmetry principle. It allows to describe of all interactions in term of only three parameters, namely the gauge coupling constants. However, the same principle predicts that all the particles of the SM should be massless. This is not the case, which means that the symmetry must somehow be broken. This phenomenon is called electroweak symmetry breaking(EWSB) and the physics responsible for it remains to a large extend unknown and uncovering it has been one of the main quests of high energy physics, both theoretical and experimental for the past two or three decades.

粒子物理学的标准模型（SM）描述了迄今为止已知的所有粒子和力。在过去的50年里，它已经被测试到精致的精度。标准模型的理论描述是基于一个优雅的对称原理。它允许描述的所有相互作用的条款只有三个参数，即规范耦合常数。然而，同样的原理预测SM的所有粒子都应该是无质量的。事实并非如此，这意味着对称性必须以某种方式被打破。这种现象被称为电弱对称性破缺（EWSB），造成这种现象的物理学在很大程度上仍然是未知的，揭示它一直是高能物理学的主要任务之一，在过去的二三十年里，无论是理论还是实验。