论文标题
三角奇点的新物理机会
New Physics Opportunities in Triangle Singularity
论文作者
论文摘要
我们表明，涉及新物理颗粒的循环诱导的过程很容易满足Landau方程，并在高能量围墙处触发三角形奇异性，从而导致完全可见的标准模型最终状态。新物理学中的四粒子顶点允许三角形奇异图避免大量的虚拟性抑制。此外，在可能延伸至低动量交换的粒子散射过程中，也可能发生$ t $ channel三角奇异性。我们讨论了超对称和扩展的希格斯模型中的几个典型场景，然后在特定的外部动量点处识别环路 - 整合振幅中的单数组件。
We show that loop-induced processes involving new physics particles can readily satisfy Landau Equation and trigger triangular singularities at high energy colliders, leading to fully visible Standard Model final states. Four-particle vertices in new physics allow triangular singularity diagrams to evade large virtuality suppression. In addition, a $t$-channel triangular singularity can also occur in particle scattering processes that may extend to low momentum exchange. We discuss several typical scenarios in supersymmetric and extended Higgs models, then identify the singular component in the loop-integral amplitude at specific external momentum points.
