论文标题
$δ$ f = 2过渡的SMEFT解释
SMEFT interpretation of $Δ$F = 2 transitions
论文作者
论文摘要
在弱有效理论（湿）的背景下，$ΔF= 2 $转变的模型独立解剖结构，讨论了ELECTOWEAK量表（EW）的弱有效理论（EW）和高于EW量表的标准模型有效场理论（SMEFT）。在Wilson系数方面，介绍了混合振幅$ M_ {12} $的BSM贡献的两个主公式。输入这些公式的系数分别包含EW量表下方和NP量表$λ$的所有信息。从顶级Yukawa耦合的重新归一化组进化对结果的影响最大。所获得的表达取决于是否考虑了SMEFT操作员的下基础或向上基础。
A model-independent anatomy of $ΔF= 2$ transitions in the context of the Weak Effective Theory (WET) below the electroweak scale (EW) and the Standard Model Effective Field Theory (SMEFT) above the EW scale is discussed. Two master formulae for the BSM contribution of the mixing amplitude $M_{12}$, in terms of Wilson coefficients are presented. The coefficients entering these formulae contain all the information below the EW scale and the NP scale $Λ$, respectively. The renormalization group evolution from the top-quark Yukawa coupling has the largest impact on the result. The obtained expressions depend on whether the down-basis or the up-basis for SMEFT operators is considered.
