发表机构
Università del Salento; INFN Sezione di Lecce; CNR NANOTEC, Institute of Nanotechnology（萨伦托大学; 意大利国家核物理研究所莱切分部; 意大利国家研究委员会纳米技术研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出一个含反常U(1)矢量门户的有效axi-Higgs模型，通过Stueckelberg机制和瞬子周期势确定其质量与耦合，并研究其核散射、发射及热遗迹丰度的宇宙学影响。
AI 中文摘要
我们发展了一个有效的axi-Higgs模型，包含一个标准模型希格斯二重态、一个带电的隐藏希格斯粒子和一个反常的阿贝尔矢量门户。在扩展先前的Higgs--Stueckelberg构造的基础上，我们通过解耦一个重标量径向模式来推导Stueckelberg动能项，并从存活的标量相位的混合中识别出规范不变的手性赝标量。一个由瞬子启发的周期性相互作用决定了axi-Higgs的质量、其与隐藏径向激发的耦合以及固定径向场极限下的正弦-戈登扭结。我们构造了反常消除的规范完备化，使用一个阿贝尔A--B例子来引入该机制，然后将其推广到非阿贝尔隐藏扇区实现。我们研究了周期势、隐藏规范动力学和theta真空能量之间的关系，通过反常的Yukawa相位旋转识别不变角。矢量门户提供了相干的弹性核散射截面，并允许额外的axi-Higgs发射，我们确定了其费曼图和运动学阈值。数值例子展示了质量和相互作用尺度，我们研究了条件性热遗迹丰度及其宇宙学意义。
英文摘要
We develop an effective axi-Higgs model with one Standard Model Higgs doublet, one charged hidden Higgs and an anomalous Abelian vector portal. Extending previous Higgs--Stueckelberg constructions, we derive the Stueckelberg kinetic term by decoupling a heavy scalar radial mode and identify the gauge-invariant physical pseudoscalar from the mixing of the surviving scalar phases. A single instanton-motivated periodic interaction determines the axi-Higgs mass, its couplings to the hidden radial excitation and the sine-Gordon kink in the fixed-radial-field limit. We construct the anomaly-canceling gauge completion, using an Abelian A--B example to introduce the mechanism before its non-Abelian hidden-sector realization. We examine the relation between the periodic potential, the hidden gauge dynamics and the theta-vacuum energy, identifying the invariant angle through the anomalous Yukawa phase rotation. The vector portal gives a coherent elastic nuclear-scattering cross section and permits additional axi-Higgs emission, whose diagrams and kinematic threshold we determine. Numerical examples illustrate the mass and interaction scales, and we investigate conditional thermal relic abundances and their cosmological implications.
Comments37 pages, 8 figs
