论文标题
带有小尺寸instantons的超大轴
Supersizing axions with small size instantons
论文作者
论文摘要
我们构建了一个新框架，以计算轴突质量的增强和对由小尺寸Instantons（SSIS）产生的轴突混合的伴随效应，该混合源于具有扩展的彩色仪表对称性的型号。该框架是基于对分配给Instanton振幅的“ T Hooft确定运算符的明确评估”，比以前的结果更精确地确定了轴 - 二键型耦合的确定。使用参考文献中首先提出的明确模型。 ARXIV：1805.06465，我们证明了解决强CP问题的轴可以具有Electroweak量表质量，并且在SSI效应的驱动下更高。这种对撞机轴是在大型强子对撞机上进行共振搜索的主要目标，并为激励扩展颜色对称性提供了独特的锚。
We construct a new framework to calculate the enhancement of axion masses and concomitant effects on axion-meson mixing arising from small size instantons (SSIs), which originate in models featuring an extended color gauge symmetry. The framework is based on an explicit evaluation of 't Hooft determinantal operators that partition into instanton amplitudes, affording a more precise determination of the axion-diphoton coupling than previous results. Using an explicit model first presented in Ref. arXiv:1805.06465, we demonstrate that axions solving the strong CP problem can have electroweak scale masses and higher, driven by SSI effects. Such collider axions are prime targets for resonance searches at the Large Hadron Collider and afford a unique anchor for motivating extended color symmetries.
