论文标题
从$（g-2）_μ$上的$ \ mathrm {u}（1）_x $
On $(g-2)_μ$ From Gauged $\mathrm{U}(1)_X$
论文作者
论文摘要
我们研究了$（g-2）_μ$异常的经济解释，并从自发损坏的$ \ mathrm {u}（1）_x $ $ gauge对称性中具有中性矢量玻色子。标准模型费米含量通过3个右撇子中微子最小扩展。使用一系列互补约束，我们对可重新分析的，夸克风味的，类似矢量的$ \ mathrm {u}（1）_x $型号进行了彻底的研究，允许任意动力学混合。在419个具有不超过十个整数电荷的模型中，只有7个模型是可行的解决方案，描述了模型空间中一个狭窄的区域。这些要么是$L_μ-L_τ$，要么是具有电子比率与BARYON数字的型号接近$ -2 $。关键的互补约束来自搜索非标准中微子相互作用。此外，我们对手性$ \ mathrm {u}（1）_x $解决方案的严重挑战发表评论，并在特别有前途的候选人身上显示出严重的约束。
We investigate an economical explanation for the $(g-2)_μ$ anomaly with a neutral vector boson from a spontaneously broken $\mathrm{U}(1)_X$ gauge symmetry. The Standard Model fermion content is minimally extended by 3 right-handed neutrinos. Using a battery of complementary constraints, we perform a thorough investigation of the renormalizable, quark flavor-universal, vector-like $\mathrm{U}(1)_X$ models, allowing for arbitrary kinetic mixing. Out of 419 models with integer charges not greater than ten, only 7 models are viable solutions, describing a narrow region in model space. These are either $L_μ-L_τ$ or models with a ratio of electron to baryon number close to $-2$. The key complementary constraints are from the searches for nonstandard neutrino interactions. Furthermore, we comment on the severe challenges to chiral $\mathrm{U}(1)_X$ solutions and show the severe constraints on a particularly promising such candidate.
