论文标题
建造一致的parton淋浴
Building a consistent parton shower
论文作者
论文摘要
现代的Parton阵雨是使用两种型号之一建造的：偶极阵雨或角度有序阵雨。两者都有独特的优势和劣势。偶极阵阵阵阵阵阵摇摆的角度，柔软的Gluon排放并以QCD颜色电荷跟踪引导流量，但已知它们是不幸的党派后坐力。角度有序的阵雨可以更好地跟踪党的后坐力，并正确地包括大量的广角，软物理学，但方位角平均意味着它们是众所周知的，这会使某些相关性不足。在本文中，我们从相同的起点得出了两种方法。将我们对两个阵雨的理解联系起来。这种见解使我们能够构建一个新的偶极淋浴，该偶极淋浴具有标准偶极淋浴的所有优势以及倾斜有序淋浴的淋浴。我们表明，这种新方法纠正了先前在Parton阵雨中观察到的临近领域错误错误，并提高了其子领先颜色的精度。
Modern parton showers are built using one of two models: dipole showers or angular ordered showers. Both have distinct strengths and weaknesses. Dipole showers correctly account for wide-angle, soft gluon emissions and track the leading flows in QCD colour charge but they are known to mishandle partonic recoil. Angular ordered showers keep better track of partonic recoil and correctly include large amounts of wide-angle, soft physics but azimuthal averaging means they are known to mishandle some correlations. In this paper, we derive both approaches from the same starting point; linking our understanding of the two showers. This insight allows us to construct a new dipole shower that has all the strengths of a standard dipole shower together with those of an angular ordered shower. We show that this new approach corrects the next-to-leading-log errors previously observed in parton showers and improves their sub-leading-colour accuracy.
