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arXiv 1603.03062hep-ph
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对“有效场论中一般功率计算规则的分析“一文的评论

Comment on "Analysis of General Power Counting Rules in Effective Field Theory"

G. Buchalla, O. Cata, A. Celis, C. Krause

摘要:

在最近的一篇论文[1]中,给出了一般有效场论的功率计算的主公式。我们首先表明,这个主公式如下立即从手征尺寸(循环计数)的概念,连同标准尺寸分析。随后,[1]对手征拉格朗日量的手征计数的相关性提出了质疑,特别是对于包含轻希格斯玻色子的电弱手征拉格朗日量。作为一种替代办法,有人提出了基于“主要维度”的功率计算。这个计划遇到的困难导致作者提出,甚至电弱手征拉格朗日量的领先秩序不能明确定义。在这里,我们证明了初级尺寸的概念是无关的手征拉格朗日的组织。我们再次强调,正确的计数是基于手征维数,或循环顺序的计数,并显示如何解决[1]中遇到的问题。

英文摘要:

In a recent paper [1] a master formula has been presented for the power counting of a general effective field theory. We first show that this master formula follows immediately from the concept of chiral dimensions (loop counting), together with standard dimensional analysis. Subsequently, [1] has disputed the relevance of chiral counting for chiral Lagrangians, and in particular for the electroweak chiral Lagrangian including a light Higgs boson. As an alternative, a power counting based on `primary dimensions' has been proposed. The difficulties encountered with this scheme led the authors to suggest that even the leading order of the electroweak chiral Lagrangian could not be clearly defined. Here we demonstrate that the concept of primary dimensions is irrelevant for the organization of chiral Lagrangians. We re-emphasize that the correct counting is based on chiral dimensions, or the counting of loop orders, and show how the problems encountered in [1] are resolved.

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