Aebischer Jason, Pesut Marko, Polonsky Zachary
Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland.
Eur Phys J C Part Fields. 2024;84(7):750. doi: 10.1140/epjc/s10052-024-13101-0. Epub 2024 Jul 27.
A novel method to treat effects from evanescent operators in next-to-leading order (NLO) computations is introduced. The approach allows, besides further simplifications, to discard evanescent-to-physical mixing contributions in NLO calculations. The method is independent of the treatments of and can therefore be combined with different renormalization schemes. We illustrate the utility of this result by reproducing literature results of two-loop anomalous dimension matrices for both and transitions.
介绍了一种在次领头阶（NLO）计算中处理瞬逝算符效应的新方法。该方法除了能进一步简化外，还能在NLO计算中摒弃瞬逝与物理混合贡献。此方法与[具体内容]的处理方式无关，因此可与不同的重整化方案相结合。我们通过重现关于[具体内容]和[具体内容]跃迁的双圈反常维数矩阵的文献结果来说明这一结果的实用性。
