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arXiv 1808.04742hep-phhep-th
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副主导权${N}$ -喷流算子II的反常维数

Anomalous dimension of subleading-power ${N}$-jet operators II

Martin Beneke, Mathias Garny, Robert Szafron, Jian Wang

摘要:

我们继续研究次引导幂$N$ -喷流算符的反常维数。在本文中,我们主要讨论了在QCD中对应于夸克(反夸克)激发喷注的在每个共线方向上费米子数为1的算符。我们调查的软回路引起的重整化效应和计算的一个回路混合的时间顺序的产品涉及功率抑制SCET拉格朗日插入到$N$ -喷流通过软回路。我们讨论了共线方向上的费米子数守恒,并给出了电流的共线反常维数矩阵的显式结果。费曼规则的功率抑制SCET相互作用的位置空间形式主义收集在附录中。

英文摘要:

We continue the investigation of the anomalous dimension of subleading-power $N$-jet operators. In this paper, we focus on the operators with fermion number one in each collinear direction, corresponding to quark (antiquark) initiated jets in QCD. We investigate the renormalization effects induced by the soft loop and compute the one-loop mixing of time-ordered products involving power-suppressed SCET Lagrangian insertions into $N$-jet currents through soft loops. We discuss fermion number conservation in collinear directions and provide explicit results for the collinear anomalous dimension matrix of the currents. The Feynman rules for the power-suppressed SCET interactions in the position-space formalism are collected in an appendix.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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