论文标题
希格斯物理学的扰动单位性和脱钩的讲座
Lectures on perturbative unitarity and decoupling in Higgs physics
论文作者
论文摘要
这些讲座是对标准模型（SM）之内和超越HIGGS物理学应用于HIGGS物理学的应用的教学介绍。我首先回顾了扰动单位性是由量子机械散射理论产生的，并将其应用于SM中纵向载体玻色子散射的经典问题，以得出Higgs玻色子质量上著名的上限。然后，我将扩展的Higgs扇区使用，使用两-higgs-doublet模型，标量隔板模型和Georgi-Machacek模型作为案例研究。我讨论了这些模型中其他HIGGS玻色子的质量和耦合的相互交织的约束，从而突出了扰动单位性与脱钩极限之间的联系。我将直接审查两-higgs doublet模型中的去耦极限，并在对齐限制上进行离题。这些笔记是基于过去几年中有关超越现象学的研究生课程的讲座，是我Tasi 2013 Higgs Physics讲座的伴侣卷。
These lectures are a pedagogical introduction to the application of perturbative unitarity to Higgs physics within and beyond the Standard Model (SM). I begin with a review of how perturbative unitarity arises from quantum mechanical scattering theory and apply it to the classic problem of longitudinal vector boson scattering in the SM to derive the famous upper bound on the Higgs boson mass. I then consider extended Higgs sectors, using the two-Higgs-doublet model, the scalar septet model, and the Georgi-Machacek model as case studies. I discuss the resulting Higgs coupling sum rules as well as the intertwined constraints on masses and couplings of the additional Higgs bosons in these models, highlighting the connection between perturbative unitarity and the decoupling limit. I finish with a direct review of the decoupling limit in the two-Higgs-doublet model and a digression on the alignment limit. These notes are based on lectures delivered over the past few years in a graduate-level course on beyond-the-SM phenomenology and are meant as a companion volume to my TASI 2013 lectures on Higgs physics.
