论文标题
最佳可观察到的颜色单线识别
An Optimal Observable for Color Singlet Identification
论文作者
论文摘要
我们提出了一种构建颜色标记器的新方法，即能够将颜色单词衰减与不同颜色配置中的两射流背景的两个喷气式的衰减。我们通过在软限制中明确取用相应的前阶矩阵元素的比率来做到这一点。我们称此可观察到的是“喷气彩色环”，并将其性能与其他有色敏感的观测值（例如Jet Pull and Dipolarity）进行了比较。我们还通过将其应用于增强的Higgs玻色子和Electroweak Boson的Hadronic腐烂情况，评估模拟中喷气颜色环的性能。
We present a novel approach to construct a color tagger, i.e. an observable that is able to discriminate the decay of a color-singlet into two jets from a two-jet background in a different color configuration. We do this by explicitly taking the ratio of the corresponding leading-order matrix elements in the soft limit, thus obtaining an observable that is provably optimal within our approximation. We call this observable the "jet color ring" and we compare its performance to other color-sensitive observables such as jet pull and dipolarity. We also assess the performance of the jet color ring in simulations by applying it to the case of the hadronic decays of a boosted Higgs boson and of an electroweak boson.
