Anomalies in decays induced by ( ) transitions may imply lepton flavor universality violations, which raises questions on such phenomena in the D decays induced by transitions. Current measurements of the pure leptonic and semi-leptonic D decays agree with the standard model (SM) predictions, and such agreements can be used to constrain the new physics (NP) contributions. In this work, we extend SM by assuming general effective Hamiltonians describing the transitions including the full set of the four-fermion operators. With the latest experimental data, we perform a least fit of the Wilson coefficient corresponding to each operator. The results indicate that the Wilson coefficients of tensor and scalar operators in the muon sector are in the order of while others are in the order of . The lepton flavor universality could be violated by interactions with the scalar operators. We also determine that the pure leptonic decays are significantly sensitive to scalar operators. The effects of NP on the semi-leptonic decays with electron final state are negligible; however, for the decays with the muon final state, the effects of scalar and tensor operators will appear in the forward-backward asymmetries and the muon helicity asymmetries of decays. The future measurements of these decays in the BESIII and Belle II experiments will facilitate the evaluation of NP effects.

( ) 跃迁引起的衰变异常可能意味着轻子风味普遍性违反，这对跃迁引起的D衰变中的这种现象提出了质疑。目前对纯轻子和半轻子D衰变的测量与标准模型 (SM) 的预测一致，并且此类协议可用于约束新物理 (NP) 的贡献。在这项工作中，我们通过假设描述包括全套四费米子算子在内的转换的一般有效哈密顿量来扩展 SM。使用最新的实验数据，我们执行最少对应于每个算子的威尔逊系数的拟合。结果表明，μ子扇区中张量和标量算子的Wilson系数在0级，而其他的在.级。与标量运算符的交互可能会违反轻子风味的普遍性。我们还确定纯轻子衰变对标量算子非常敏感。NP对电子终态半轻子衰变的影响可以忽略不计；然而，对于具有 μ 子终态的衰变，标量和张量算子的影响将出现在衰变。在 BESIII 和 Belle II 实验中对这些衰变的未来测量将有助于评估 NP 效应。