中文摘要：

为新物理看更低的精力 colliders 是对象 LHC 那样的高精力机器补足的一条路径，这很好被认出。用 BESIII 收集的大量数据，我们可以有一个唯一的机会处理这。在这份报纸，我们计算 semi-leptonic 过程的分叉的比率并且，并且 leptonic 过程 D ⁰ e e ⁺ 和 D ⁰ 在 U (1 ) 模型，的框架的 e ⁺, 2HDM 和 unparticle 模型。U (1 ) 模型和 2HDM 可以影响 semi-leptonic 腐烂率，这被发现，但是仅仅 U (1 ) 模型把实质的贡献提供给纯 leptonic 腐烂，和 D ⁰ e ⁺ 能象 10 ⁷~10⁸ 一样大。这可能在未来被观察超级魅力工厂。

英文摘要：

It is well recognized that looking for new physics at lower energy colliders is a path wnmn is complemen- tary to high energy machines such as the LHC. Using the large volume of data collected by BESIII, we may have a unique opportunity to tackle this. In this paper we calculate the branching ratios of the semi-leptonic processes D＋ → K＋e-e＋ and D＋ → K＋e-P-＋, and the leptonic processes D0→ e-e＋ and D0→ e-μ＋, in the frameworks of the U（1） model, 2HDM and unparticle model. It is found that both the U（1） model and 2HDM may influence the semi-leptonic decay rates, but only the U（1） model offers substantial contributions to the pure leptonic decays, and the resultant branching ratio of DO → e- μ＋ can be as large as 10-7 - 10-8. This might be observed at the future super τ-charm factory.