Higgs sector extensions and their constraints

我提出这个建议的目的是研究粒子物理学标准模型中希格斯区“奇异的”扩展。希格斯扇区是一组负责产生基本粒子质量的粒子；2012年，欧洲核子研究中心的大型强子对撞机首次发现了它的物理表现——希格斯玻色子。从那时起，大型强子对撞机实验的两个主要重点是(1)测量发现的希格斯玻色子的性质，(2)寻找可能的额外希格斯玻色子，这将表明希格斯扇区的扩展（或非最小）版本。我的工作重点是对这种扩展希格斯粒子的理论研究。特别是，我研究的是“奇异的”希格斯扇区扩展，它包含希格斯玻色子，而不是简单地复制最简单的标准模型同位旋双重希格斯场。这项工作的目的首先是限制（先验的接近无限的）外来希格斯场的可能种类，然后确定那些在大多数理论上可接受的外来希格斯扇区中共同出现的实验特征，以便在大型强子对撞机和其他实验中工作的实验工作者可以优先搜索这些特征。这项工作的一个重要方面是编写开源计算机软件，使实验学家能够准确地模拟奇异希格斯玻色子的特征，以便他们能够设计有效的实验搜索策略。这项工作的最终目的是能够确定地说，外来的希格斯场是否在产生基本粒子的质量方面发挥了任何作用。

My objective in this proposal is to study "exotic" extensions of the Higgs sector of the Standard Model of particle physics.  The Higgs sector is the set of particles responsible for the generation of the mass of the fundamental particles; its physical manifestation, a Higgs boson, was first discovered by the Large Hadron Collider at CERN in 2012.  Two of the main focuses of Large Hadron Collider experiments since then have been (1) the measurement of the properties of the discovered Higgs boson and (2) searches for possible additional Higgs bosons that would indicate an extended (or non-minimal) version of the Higgs sector.  My work focuses on the theoretical study of such extended Higgs sectors.  In particular, I work on "exotic" Higgs sector extensions, that contain Higgs bosons that are not simply a replication of the simplest Standard Model isospin-doublet Higgs field.  The purpose of this work is first to constrain the (a priori near infinite) possible variety of exotic Higgs fields, and then to identify those experimental signatures that appear in common across the majority of theoretically-acceptable exotic Higgs sectors, so that searches for these signatures can be prioritized by the experimentalists working at the Large Hadron Collider and other experiments.  An important aspect of this work is writing open-source computer software that will allow experimentalists to accurately simulate the features of the exotic Higgs bosons, so that they can design effective experimental search strategies.  The ultimate aim of this work is to be able to say with certainty whether exotic Higgs fields play any role in generating the masses of the fundamental particles.