Georgi-Machacek模型中电弱相变的改进分析及其现象学
Improved analyses of the electroweak phase transition and its phenomenology in the Georgi-Machacek model
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中文总结 AI 辅助
该研究在Georgi-Machacek模型中利用热求和有效势和贝叶斯分析改进电弱相变研究，发现强一阶相变参数点可由下一代实验验证。
中文摘要 AI 辅助
Georgi-Machacek模型是一种有前景的新物理方案，其中包含同位旋三重态标量场，其效应与标准模型相比可以定性改变电弱相变的性质。我们通过使用热求和单圈有效势来检验该模型中的电弱相变。我们还通过根据重整化群方程演化耦合常数和经典场，纳入了由辐射修正引起的 custodial 对称性破缺效应。我们利用理论要求和最新的实验约束，通过贝叶斯分析确定可行的参数区域。然后，我们研究所得参数区域中的电弱相变，并讨论其现象学意义，例如希格斯玻色子衰变为中性规范玻色子、高能对撞机上的双希格斯产生，以及与一阶电弱相变相关的随机引力波。我们发现，强一阶电弱相变的参数点可以通过下一代实验中的这些可观测量得到验证。
英文摘要
The Georgi-Machacek model is a promising new physics scenario with isospin-triplet scalar fields, whose effects can qualitatively change the nature of the electroweak phase transition compared with the Standard Model. We examine the electroweak phase transition in this model by using the thermally resummed one-loop effective potential. We also incorporate effects of custodial symmetry breaking due to radiative corrections by evolving the couplings and classical fields according to the renormalization group equations. We identify viable parameter regions by Bayesian analysis using theoretical requirements and the latest experimental bounds. We then investigate the electroweak phase transition in the resulting parameter regions and discuss its phenomenological implications, such as Higgs boson decays into neutral gauge bosons, di-Higgs production at high-energy colliders, and stochastic gravitational waves associated with a first-order electroweak phase transition. We find that parameter points for the strong first-order electroweak phase transition can be verified by these observables at next-generation experiments.
发表机构
- National Taiwan University（国立台湾大学）
- National Center for Theoretical Sciences（国家理论科学中心）
机构由 AI 辅助整理，请以论文原文为准。
