标准模型四圈水平上顶 Yukawa 耦合对强耦合 $\beta$ 函数的影响
高能物理 - 唯象学
2017-07-25 v4
摘要
我们给出了 QCD 函数在四圈水平上推广至标准模型未破缺相无规范极限的解析结果。除强耦合本身外，我们包含了顶 Yukawa 贡献和 Higgs 自耦合。我们观察到在 阶存在非平庸的 贡献，这是低圈阶中未遇到的特征。
引用
@article{arxiv.1508.03624,
title = {Top-Yukawa effects on the $\beta$-function of the strong coupling in the SM at four-loop level},
author = {M. F. Zoller},
journal= {arXiv preprint arXiv:1508.03624},
year = {2017}
}
备注
v2: more sophisticated treatment and more detailed description of the non-naive \gamma_5 contribution; Ref. added. v3: this the version published in JHEP; references [49,50] fixed; v4: changed statement on p.8: a different gamma_5 treatment only leads to a factor 3, not a factor 6 in the non-naive part compared to the prescription used in this paper. Note added on recent developments (p. 12)