AI 中文总结
该研究针对受不可逆选择规则约束的SMEFT，分类重子数守恒六维算符的味结构、确定威尔逊系数约束，发现其味结构与最小味违反假设不符，可为B介子可观测量及带电轻子味违反辐射衰变提供特征预测。
AI 中文摘要
我们研究受不可逆选择规则约束的标准模型有效场论（SMEFT）中六维算符的味结构。具体而言，我们对所有重子数守恒的六维SMEFT算符的味结构进行分类，并确定由此对其威尔逊系数产生的约束。这些选择规则不仅决定了纹理零点，还决定了威尔逊系数的允许张量结构，后者可通过少量独立参数解析表达。我们还发现，高维算符的味结构未必与 Yukawa 耦合的味结构一致，这与最小味违反假设（该假设中 Yukawa 耦合主导高维算符的味结构）形成对比。结果表明，由此产生的味和手征模式不同于采用常规味对称性的SMEFT中通常得到的模式，为B介子可观测量及带电轻子味违反辐射衰变提供了特征性预测。
英文摘要
We investigate the flavor structures of dimension-six operators in the Standard Model Effective Field Theory (SMEFT) subject to non-invertible selection rules. In particular, we classify the flavor textures of all baryon-number-conserving dimension-six SMEFT operators and determine the resulting constraints on their Wilson coefficients. The selection rules determine not only the texture zeros but also the allowed tensor structures of the Wilson coefficients, which can be expressed analytically in terms of a reduced number of independent parameters. We also find that the flavor structures of higher-dimensional operators are not necessarily aligned with those of the Yukawa couplings, in contrast to the Minimal Flavor Violation hypothesis, in which the Yukawa couplings govern the flavor structure of higher-dimensional operators. It turns out that the resulting flavor and chirality patterns differ from those typically obtained in SMEFT with conventional flavor symmetries, providing characteristic predictions for $B$-meson observables and charged-lepton-flavor-violating radiative decays.
Comments50 pages
