LITTLE HIGGS THEORIES
LITTLE HIGGS THEORIES
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DOI：
10.1146/annurev.nucl.55.090704.151502
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发表时间：
2005-02
影响因子：
12.4
通讯作者：
M. Schmaltz;David Tucker-Smith
中科院分区：
文献类型：
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作者：
M. Schmaltz;David Tucker-Smith
▪ 摘要 最近，人们对标准模型的希格斯粒子是伪南部-戈德斯通玻色子的可能性重新产生了兴趣。这一发展是由以下观察推动的：如果某些全局对称性仅因两个或多个耦合常数之间的相互作用而被破坏，则希格斯质量平方在一个环路中不会出现二次发散。这种集体对称性破缺是小希格斯理论的重要组成部分，小希格斯理论是标准模型的弱耦合扩展，几乎没有或没有微调，描述了高达 10 TeV 能量尺度的物理现象。在这里，我们对小希格斯理论进行教学介绍。我们回顾它们的结构和现象学，主要关注 SU(3) 理论、最小驼鹿和最小希格斯粒子作为具体例子。
▪ Abstract Recently there has been renewed interest in the possibility that the Higgs particle of the Standard Model is a pseudo-Nambu-Goldstone boson. This development was spurred by the observation that if certain global symmetries are broken only by the interplay between two or more coupling constants, then the Higgs mass-squared is free from quadratic divergences at one loop. This collective symmetry breaking is the essential ingredient in little Higgs theories, which are weakly coupled extensions of the Standard Model with little or no fine tuning, describing physics up to an energy scale ∼10 TeV. Here we give a pedagogical introduction to little Higgs theories. We review their structure and phenomenology, focusing mainly on the SU(3) theory, the Minimal Moose, and the littlest Higgs as concrete examples.