论文标题
部分可观测时空混沌系统的无模型预测
Power Corrections to Electroweak Boson Production from Threshold Resummation
论文作者
论文摘要
我们研究了通过阈值重新调整所暗示的Electroweak Boson生产的功率校正，我们已将其扩展到在测得的横向动量，$ P_T $和速度的大规模颗粒。由此产生的表达式中的功率校正是由于扰动运行耦合的低尺度行为中的歧义引起的。争论艾科纳尔近似的相关性，我们表明此类功率校正以$ 1/p_t^2 $的订单开始，完整QCD，与固定订购的大量胶合分析一致。对于总的$ n $ mellin矩，领导行为是$ n^2/p_t^2 $，它与阈值重新召集的对数一起指出。
We study the power corrections for electroweak boson production that are implied by threshold resummation, which we have extended to massive particles produced at measured transverse momentum, $p_T$, and rapidity. Power corrections in the resulting expressions arise from ambiguities in the low-scale behavior of the perturbative running coupling. Arguing for the relevance of the eikonal approximation, we show that such power corrections begin at order $1/p_T^2$ in full QCD, consistent with fixed-order, massive-gluon analysis. For large-$N$ Mellin moments, the leading behavior is $N^2/p_T^2$, which exponentiates along with the logarithms of threshold resummation.
