论文标题
Fierz身份的偶极子操作员
Dipole operators in Fierz identities
论文作者
论文摘要
我们研究了偶极子操作员对一环的身份的贡献,并为所有四个弗利米亚操作员提供了由此产生的QCD和QED转移到树级关系。结果简化了一环的更改以及匹配的计算,并允许一个人从操作员基础中始终如一地消除操作员,从而引起并发症,例如涉及$γ_5$的痕迹。
We study the contribution from dipole operators to one-loop Fierz identities and provide the resulting QCD and QED shifts to the tree-level relations for all four-fermion operators. The results simplify one-loop basis changes as well as matching computations and allow one to consistently eliminate operators from an operator basis which give rise to complications, e.g. traces involving $γ_5$.