Energy correlators provide a powerful observable to study fragmentation dynamics in QCD. We demonstrate that the leading nonperturbative corrections for projected N-point energy correlators are described by the same universal parameter for any N, which has already been determined from other event shape fits. Including renormalon-free nonperturbative corrections substantially improves theoretical predictions of energy correlators, notably the transition into the confining region at small angles. Nonperturbative corrections are shown to have a significant impact on αs extractions. Published by the American Physical Society 2024

中文翻译：

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能量相关器中的非扰动效应：从表征约束跃迁到改进 αs 提取


能量相关器为研究 QCD 中的碎裂动力学提供了强大的可观测对象。我们证明，投影 N 点能量相关器的主要非扰动校正由任何 N 的相同通用参数描述，这已经从其他事件形状拟合中确定。包括无 renormalon 的非扰动校正大大改进了能量相关器的理论预测，特别是以小角度向受限区域的过渡。非扰动校正被证明对 αs 提取有显着影响。 美国物理学会 2024 年出版