论文标题
向量leptoquark模型的标量扇区中的辐射效应
Radiative Effects in the Scalar Sector of Vector Leptoquark Models
论文作者
论文摘要
TEV量表上具有大量矢量leptoquarks的仪表模型为解决B物理异常提供了成功的框架。其中，4321型模型被认为是一些完整风味理论的低能极限。在这项工作中，我们研究了该模型的重新归一化组演变，并特别强调标量部门。我们发现，尽管量规耦合的渐近自由度，但由于四分之一的耦合的快速运行，Landau杆可能以相对较低的尺度出现。此外，我们讨论了辐射电动对称性破坏的可能性，并表征了与电子尺度和其他TEV尺度标量之间的层次结构相关的微观调整。最后，探索标量场统一的概念是由4321模型的紫外线嵌入的动机。
Gauge models with massive vector leptoquarks at the TeV scale provide a successful framework for addressing the B-physics anomalies. Among them, the 4321 model has been considered as the low-energy limit of some complete theories of flavor. In this work, we study the renormalization group evolution of this model, laying particular emphasis on the scalar sector. We find that, despite the asymptotic freedom of the gauge couplings, Landau poles can arise at relatively low scale due to the fast running of quartic couplings. Moreover, we discuss the possibility of radiative electroweak symmetry breaking, and characterize the fine-tuning associated with the hierarchy between the electroweak scale and the additional TeV-scale scalars. Finally, the idea of scalar fields unification is explored, motivated by ultraviolet embeddings of the 4321 model.
