论文标题
对山脉的各向同性事件的强大度量
A Robust Measure of Event Isotropy at Colliders
论文作者
论文摘要
我们引入了一个可观察到的新事件形状 - 各向异性 - 量化对撞机事件的辐射模式与均匀分布的距离。可观察到的可观察到的基于能量移动器距离的归一化版本，这是将一种辐射模式重新排列到另一个相等能量的最小“工作”。我们研究了事件各向同性的效用，既将事件与完美的球形辐射模式进行了比较，以及在质子 - 普罗顿胶体面带中，在这种情况下，自然比较是与圆柱形或环状图案的自然比较。与传统的事件形状可观察到球形和推力等传统形状相比，事件各向同性在高多种事件中表现出更大的动态范围。该事件各向同性不仅能够区分Dijet和多喷气过程，还可以区分N型N型n体相空间配置，以确定N的不同值。作为该新观察到的可观察到的关键应用，我们研究了其性能，以表征与同型胶体签名的强烈耦合的新物理场景。
We introduce a new event shape observable -- event isotropy -- that quantifies how close the radiation pattern of a collider event is to a uniform distribution. This observable is based on a normalized version of the energy mover's distance, which is the minimum "work" needed to rearrange one radiation pattern into another of equal energy. We investigate the utility of event isotropy both at electron-positron colliders, where events are compared to a perfectly spherical radiation pattern, as well as at proton-proton colliders, where the natural comparison is to either cylindrical or ring-like patterns. Compared to traditional event shape observables like sphericity and thrust, event isotropy exhibits a larger dynamic range for high-multiplicity events. This enables event isotropy to not only distinguish between dijet and multijet processes but also separate uniform N-body phase space configurations for different values of N. As a key application of this new observable, we study its performance to characterize strongly-coupled new physics scenarios with isotropic collider signatures.
