Electroweak Symmetry Breaking Beyond the Standard Model

电-弱对称破缺的机制至今仍未被理解。大型强子对撞机将在几年内探测相关的能量范围，并有望提供必要的线索，从而找到解决方案。由于目前没有一种解释电弱对称性破缺的方法在理论上是令人信服的，也没有经过实验验证，因此任何可能导致这一领域取得进展的方法都值得探索。PI建议在构建模型的意义上探索替代方法，并从对撞机和精确数据中找出约束条件。这个提议的一个方面是探索希格斯机制作为质量起源的替代方案。他们的想法是使用大量矢量玻色子的Kaluza-Klein塔来延迟没有希格斯机制的情况下发生的单一性破坏。π吗?S计划进一步研究该模型及其推广。如果在Tevatron或大型强子对撞机的能量中没有发现希格斯粒子，那么除了希格斯粒子之外，有一个产生质量的替代方案将是非常重要的。

The mechanism of Electro-Weak symmetry breaking is still not understood. LHC will probe the relevant energy range in a few years and will hopefully provide the necessary clues that will lead to a solution. Since no approach to explaining electroweak symmetry breaking is presently theoretically compelling and experimentally tested, it is worthwhile to explore any approach that might lead to progress in this area. The PI's propose to both explore alternative approaches in the sense of building models, and to work out constraints from collider and precision data. One aspect of this proposal is to explore an alternative to the Higgs mechanism as the origin of mass. The idea is to use Kaluza-Klein towers of massive vector bosons to delay the unitarity violations that occur without a Higgs mechanism. The PI?s plan to further study this model and its generalizations. Having an alternative scenario for generating mass other than a Higgs particle will be very important if the Higgs is not found at Tevatron or LHC energies.