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arXiv 1002.4216hep-phhep-ex
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在Two-Higgs-Doublet模型中新的带电Higgs效应对$Γ_{K_{e2}}/Γ_{K_{μ2}}$、$f_{D_s}$和${\cal B}(B^+\to τ^+ ν)$的影响

New charged Higgs effects on $Γ_{K_{e2}}/Γ_{K_{μ2}}$, $f_{D_s}$ and ${\cal B}(B^+\to τ^+ ν)$ in the Two-Higgs-Doublet model

Y. H. Ahn, Chuan-Hung Chen

摘要:

在一般的双Higgs模型(THDM)中,提出了一种在树水平上不含变味中性流(FCNC)的Yukawa矩阵的新方案。我们发现带电Higgs粒子与费米子的新型耦合不仅依赖于粒子的味道,而且可以归因于新的CP破坏相。与传统的THDM不同,新的荷电Higgs效应具有以下特点:(a)对$Γ(K^\pm_{e 2})/Γ(K^\pm_{μ2})$的影响不能消除,(b)$D_s$的衰变常数可以提高,(c)$B^+\to τ^+ ν$的分支比可以提高.

英文摘要:

A new scheme for Yukawa matrices is proposed for free of flavor changing neutral currents (FCNCs) at tree level in general two-Higgs-doublet model (THDM) without imposing symmetry. We find that the new type couplings of charged Higgs to fermions not only depend on the flavors, but also can be ascribed by new CP violating phases. Unlike conventional THDM, the resulted new charged Higgs effects could have the specialties: (a) the influence on $Γ(K^\pm_{e 2})/Γ(K^\pm_{μ2})$ cannot be eliminated, (b) the decay constant of $D_s$ could be enhanced, and (c) enhancement of branching ratio for $B^+\to τ^+ ν$ could be achieved.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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