论文标题
Parton阵雨超出了对数准确性
Parton showers beyond leading logarithmic accuracy
论文作者
论文摘要
Parton淋浴是对撞机物理学中最广泛使用的工具之一。尽管它们的重要性很重要，但到目前为止，没有一个人能够表现出超出基本水平的准确性，即领先的对数（LL）顺序，并且随之而来的是广泛的物理应用程序的局限性。在这封信中，我们提出了阵雨的标准，以被视为临近领导的对数（NLL）精确。然后，我们引入了新的淋浴间，以进行最终状态辐射，以满足这些标准在广泛使用的大型$ N_C $限制中的主要元素。作为概念的证明，我们证明了这些淋浴与一系列可观察到的全阶NLL计算的一致性，这对于任何Parton淋浴都迄今为止尚未实现。
Parton showers are among the most widely used tools in collider physics. Despite their key importance, none so far has been able to demonstrate accuracy beyond a basic level known as leading logarithmic (LL) order, with ensuing limitations across a broad spectrum of physics applications. In this letter, we propose criteria for showers to be considered next-to-leading logarithmic (NLL) accurate. We then introduce new classes of shower, for final-state radiation, that satisfy the main elements of these criteria in the widely used large-$N_C$ limit. As a proof of concept, we demonstrate these showers' agreement with all-order analytical NLL calculations for a range of observables, something never so far achieved for any parton shower.
