RI/SMOM方案中Delta S=1四夸克算符的匹配因子
Matching factors for Delta S=1 four-quark operators in RI/SMOM schemes
摘要：
四夸克算符的非微扰重整化在味物理的格点研究中起着重要的作用。为此，我们定义了正则化独立的对称动量减法（RI/S）计划的Delta S=1变味四夸克运营商和提供一个循环匹配因子的MS-酒吧计划在天真的维正则化。用两类不同的方案讨论了两夸克算符的混合。我们提供了一个紧凑的表达有限的一个循环的振幅，允许一个简单的定义进一步的RI/SCRESS计划。
英文摘要：
The non-perturbative renormalization of four-quark operators plays a significant role in lattice studies of flavor physics. For this purpose, we define regularization-independent symmetric momentum-subtraction (RI/SMOM) schemes for Delta S=1 flavor-changing four-quark operators and provide one-loop matching factors to the MS-bar scheme in naive dimensional regularization. The mixing of two-quark operators is discussed in terms of two different classes of schemes. We provide a compact expression for the finite one-loop amplitudes which allows for a straightforward definition of further RI/SMOM schemes.
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