Calculation of the SM beta functions at four-loop accuracy

四环精度下 SM beta 函数的计算

• 批准号: 272124867
• 负责人: Privatdozentin Dr. Luminita Nicoleta Mihaila
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/272124867?language=en
• 关键词: Calculation; SM; beta; functions; four

Development of computational setup to handle four-loop Feynman diagrams; Computation of the four-loop beta functions for the SM gauge-, Yukawa- and Higgs-self-couplings; Computation of the four-loop threshold corrections to the gluon-propagator taking into account Yukawa corrections; Derivation of the four-loop mixed Yukawa-QCD corrections to the effective Higgs-gluon-gluon vertex; Computation of the three-loop threshold corrections to the Higgs boson self-coupling.

发展了处理四圈Feynman图的计算装置;计算了SM规范-、Yukawa-和Higgs-自耦合的四圈β函数;计算了考虑Yukawa修正的胶子传播子的四圈阈值修正;推导了Higgs-胶子-胶子有效顶点的四圈混合Yukawa-QCD修正;希格斯玻色子自耦合的三圈阈修正的计算。